hotspot/src/share/vm/c1/c1_GraphBuilder.cpp
author duke
Sat, 01 Dec 2007 00:00:00 +0000
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/*
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 * Copyright 1999-2007 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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#include "incls/_precompiled.incl"
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#include "incls/_c1_GraphBuilder.cpp.incl"
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class BlockListBuilder VALUE_OBJ_CLASS_SPEC {
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 private:
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  Compilation* _compilation;
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  IRScope*     _scope;
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  BlockList    _blocks;                // internal list of all blocks
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  BlockList*   _bci2block;             // mapping from bci to blocks for GraphBuilder
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  // fields used by mark_loops
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  BitMap       _active;                // for iteration of control flow graph
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  BitMap       _visited;               // for iteration of control flow graph
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  intArray     _loop_map;              // caches the information if a block is contained in a loop
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  int          _next_loop_index;       // next free loop number
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  int          _next_block_number;     // for reverse postorder numbering of blocks
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  // accessors
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  Compilation*  compilation() const              { return _compilation; }
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  IRScope*      scope() const                    { return _scope; }
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  ciMethod*     method() const                   { return scope()->method(); }
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  XHandlers*    xhandlers() const                { return scope()->xhandlers(); }
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  // unified bailout support
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  void          bailout(const char* msg) const   { compilation()->bailout(msg); }
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  bool          bailed_out() const               { return compilation()->bailed_out(); }
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  // helper functions
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  BlockBegin* make_block_at(int bci, BlockBegin* predecessor);
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  void handle_exceptions(BlockBegin* current, int cur_bci);
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  void handle_jsr(BlockBegin* current, int sr_bci, int next_bci);
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  void store_one(BlockBegin* current, int local);
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  void store_two(BlockBegin* current, int local);
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  void set_entries(int osr_bci);
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  void set_leaders();
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  void make_loop_header(BlockBegin* block);
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  void mark_loops();
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  int  mark_loops(BlockBegin* b, bool in_subroutine);
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  // debugging
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#ifndef PRODUCT
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  void print();
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#endif
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 public:
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  // creation
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  BlockListBuilder(Compilation* compilation, IRScope* scope, int osr_bci);
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  // accessors for GraphBuilder
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  BlockList*    bci2block() const                { return _bci2block; }
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};
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// Implementation of BlockListBuilder
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BlockListBuilder::BlockListBuilder(Compilation* compilation, IRScope* scope, int osr_bci)
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 : _compilation(compilation)
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 , _scope(scope)
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 , _blocks(16)
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 , _bci2block(new BlockList(scope->method()->code_size(), NULL))
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 , _next_block_number(0)
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 , _active()         // size not known yet
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 , _visited()        // size not known yet
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 , _next_loop_index(0)
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 , _loop_map() // size not known yet
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{
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  set_entries(osr_bci);
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  set_leaders();
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  CHECK_BAILOUT();
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  mark_loops();
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  NOT_PRODUCT(if (PrintInitialBlockList) print());
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#ifndef PRODUCT
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  if (PrintCFGToFile) {
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    stringStream title;
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    title.print("BlockListBuilder ");
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    scope->method()->print_name(&title);
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    CFGPrinter::print_cfg(_bci2block, title.as_string(), false, false);
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  }
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#endif
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}
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void BlockListBuilder::set_entries(int osr_bci) {
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  // generate start blocks
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  BlockBegin* std_entry = make_block_at(0, NULL);
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  if (scope()->caller() == NULL) {
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    std_entry->set(BlockBegin::std_entry_flag);
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  }
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  if (osr_bci != -1) {
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    BlockBegin* osr_entry = make_block_at(osr_bci, NULL);
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    osr_entry->set(BlockBegin::osr_entry_flag);
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  }
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  // generate exception entry blocks
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  XHandlers* list = xhandlers();
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  const int n = list->length();
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  for (int i = 0; i < n; i++) {
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    XHandler* h = list->handler_at(i);
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    BlockBegin* entry = make_block_at(h->handler_bci(), NULL);
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    entry->set(BlockBegin::exception_entry_flag);
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    h->set_entry_block(entry);
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  }
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}
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BlockBegin* BlockListBuilder::make_block_at(int cur_bci, BlockBegin* predecessor) {
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  assert(method()->bci_block_start().at(cur_bci), "wrong block starts of MethodLivenessAnalyzer");
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  BlockBegin* block = _bci2block->at(cur_bci);
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  if (block == NULL) {
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    block = new BlockBegin(cur_bci);
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    block->init_stores_to_locals(method()->max_locals());
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    _bci2block->at_put(cur_bci, block);
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    _blocks.append(block);
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    assert(predecessor == NULL || predecessor->bci() < cur_bci, "targets for backward branches must already exist");
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  }
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  if (predecessor != NULL) {
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    if (block->is_set(BlockBegin::exception_entry_flag)) {
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      BAILOUT_("Exception handler can be reached by both normal and exceptional control flow", block);
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    }
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    predecessor->add_successor(block);
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    block->increment_total_preds();
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  }
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  return block;
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}
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inline void BlockListBuilder::store_one(BlockBegin* current, int local) {
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  current->stores_to_locals().set_bit(local);
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}
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inline void BlockListBuilder::store_two(BlockBegin* current, int local) {
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  store_one(current, local);
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  store_one(current, local + 1);
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}
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void BlockListBuilder::handle_exceptions(BlockBegin* current, int cur_bci) {
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  // Draws edges from a block to its exception handlers
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  XHandlers* list = xhandlers();
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  const int n = list->length();
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  for (int i = 0; i < n; i++) {
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    XHandler* h = list->handler_at(i);
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    if (h->covers(cur_bci)) {
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      BlockBegin* entry = h->entry_block();
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      assert(entry != NULL && entry == _bci2block->at(h->handler_bci()), "entry must be set");
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      assert(entry->is_set(BlockBegin::exception_entry_flag), "flag must be set");
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      // add each exception handler only once
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      if (!current->is_successor(entry)) {
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        current->add_successor(entry);
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        entry->increment_total_preds();
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      }
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      // stop when reaching catchall
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      if (h->catch_type() == 0) break;
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    }
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  }
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}
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void BlockListBuilder::handle_jsr(BlockBegin* current, int sr_bci, int next_bci) {
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  // start a new block after jsr-bytecode and link this block into cfg
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  make_block_at(next_bci, current);
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  // start a new block at the subroutine entry at mark it with special flag
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  BlockBegin* sr_block = make_block_at(sr_bci, current);
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  if (!sr_block->is_set(BlockBegin::subroutine_entry_flag)) {
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    sr_block->set(BlockBegin::subroutine_entry_flag);
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  }
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}
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   204
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   205
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   206
void BlockListBuilder::set_leaders() {
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  bool has_xhandlers = xhandlers()->has_handlers();
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  BlockBegin* current = NULL;
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   209
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  // The information which bci starts a new block simplifies the analysis
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  // Without it, backward branches could jump to a bci where no block was created
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   212
  // during bytecode iteration. This would require the creation of a new block at the
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   213
  // branch target and a modification of the successor lists.
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   214
  BitMap bci_block_start = method()->bci_block_start();
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   215
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   216
  ciBytecodeStream s(method());
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   217
  while (s.next() != ciBytecodeStream::EOBC()) {
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   218
    int cur_bci = s.cur_bci();
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   219
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   220
    if (bci_block_start.at(cur_bci)) {
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   221
      current = make_block_at(cur_bci, current);
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   222
    }
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    assert(current != NULL, "must have current block");
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   224
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   225
    if (has_xhandlers && GraphBuilder::can_trap(method(), s.cur_bc())) {
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   226
      handle_exceptions(current, cur_bci);
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   227
    }
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   228
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   229
    switch (s.cur_bc()) {
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   230
      // track stores to local variables for selective creation of phi functions
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   231
      case Bytecodes::_iinc:     store_one(current, s.get_index()); break;
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   232
      case Bytecodes::_istore:   store_one(current, s.get_index()); break;
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   233
      case Bytecodes::_lstore:   store_two(current, s.get_index()); break;
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   234
      case Bytecodes::_fstore:   store_one(current, s.get_index()); break;
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   235
      case Bytecodes::_dstore:   store_two(current, s.get_index()); break;
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   236
      case Bytecodes::_astore:   store_one(current, s.get_index()); break;
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   237
      case Bytecodes::_istore_0: store_one(current, 0); break;
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   238
      case Bytecodes::_istore_1: store_one(current, 1); break;
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   239
      case Bytecodes::_istore_2: store_one(current, 2); break;
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   240
      case Bytecodes::_istore_3: store_one(current, 3); break;
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   241
      case Bytecodes::_lstore_0: store_two(current, 0); break;
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   242
      case Bytecodes::_lstore_1: store_two(current, 1); break;
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   243
      case Bytecodes::_lstore_2: store_two(current, 2); break;
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   244
      case Bytecodes::_lstore_3: store_two(current, 3); break;
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   245
      case Bytecodes::_fstore_0: store_one(current, 0); break;
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   246
      case Bytecodes::_fstore_1: store_one(current, 1); break;
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   247
      case Bytecodes::_fstore_2: store_one(current, 2); break;
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   248
      case Bytecodes::_fstore_3: store_one(current, 3); break;
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   249
      case Bytecodes::_dstore_0: store_two(current, 0); break;
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   250
      case Bytecodes::_dstore_1: store_two(current, 1); break;
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   251
      case Bytecodes::_dstore_2: store_two(current, 2); break;
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   252
      case Bytecodes::_dstore_3: store_two(current, 3); break;
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   253
      case Bytecodes::_astore_0: store_one(current, 0); break;
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   254
      case Bytecodes::_astore_1: store_one(current, 1); break;
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   255
      case Bytecodes::_astore_2: store_one(current, 2); break;
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   256
      case Bytecodes::_astore_3: store_one(current, 3); break;
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   257
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   258
      // track bytecodes that affect the control flow
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   259
      case Bytecodes::_athrow:  // fall through
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   260
      case Bytecodes::_ret:     // fall through
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   261
      case Bytecodes::_ireturn: // fall through
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   262
      case Bytecodes::_lreturn: // fall through
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   263
      case Bytecodes::_freturn: // fall through
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   264
      case Bytecodes::_dreturn: // fall through
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   265
      case Bytecodes::_areturn: // fall through
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   266
      case Bytecodes::_return:
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   267
        current = NULL;
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   268
        break;
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   269
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   270
      case Bytecodes::_ifeq:      // fall through
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   271
      case Bytecodes::_ifne:      // fall through
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   272
      case Bytecodes::_iflt:      // fall through
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   273
      case Bytecodes::_ifge:      // fall through
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   274
      case Bytecodes::_ifgt:      // fall through
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   275
      case Bytecodes::_ifle:      // fall through
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   276
      case Bytecodes::_if_icmpeq: // fall through
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   277
      case Bytecodes::_if_icmpne: // fall through
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   278
      case Bytecodes::_if_icmplt: // fall through
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   279
      case Bytecodes::_if_icmpge: // fall through
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   280
      case Bytecodes::_if_icmpgt: // fall through
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   281
      case Bytecodes::_if_icmple: // fall through
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   282
      case Bytecodes::_if_acmpeq: // fall through
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   283
      case Bytecodes::_if_acmpne: // fall through
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   284
      case Bytecodes::_ifnull:    // fall through
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   285
      case Bytecodes::_ifnonnull:
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   286
        make_block_at(s.next_bci(), current);
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   287
        make_block_at(s.get_dest(), current);
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   288
        current = NULL;
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   289
        break;
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   290
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   291
      case Bytecodes::_goto:
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   292
        make_block_at(s.get_dest(), current);
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   293
        current = NULL;
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   294
        break;
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   295
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   296
      case Bytecodes::_goto_w:
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   297
        make_block_at(s.get_far_dest(), current);
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   298
        current = NULL;
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   299
        break;
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   300
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   301
      case Bytecodes::_jsr:
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   302
        handle_jsr(current, s.get_dest(), s.next_bci());
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   303
        current = NULL;
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   304
        break;
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   305
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diff changeset
   306
      case Bytecodes::_jsr_w:
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   307
        handle_jsr(current, s.get_far_dest(), s.next_bci());
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   308
        current = NULL;
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   309
        break;
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   310
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   311
      case Bytecodes::_tableswitch: {
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   312
        // set block for each case
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   313
        Bytecode_tableswitch *switch_ = Bytecode_tableswitch_at(s.cur_bcp());
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   314
        int l = switch_->length();
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diff changeset
   315
        for (int i = 0; i < l; i++) {
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   316
          make_block_at(cur_bci + switch_->dest_offset_at(i), current);
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diff changeset
   317
        }
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   318
        make_block_at(cur_bci + switch_->default_offset(), current);
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   319
        current = NULL;
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   320
        break;
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diff changeset
   321
      }
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diff changeset
   322
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diff changeset
   323
      case Bytecodes::_lookupswitch: {
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   324
        // set block for each case
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   325
        Bytecode_lookupswitch *switch_ = Bytecode_lookupswitch_at(s.cur_bcp());
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diff changeset
   326
        int l = switch_->number_of_pairs();
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diff changeset
   327
        for (int i = 0; i < l; i++) {
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diff changeset
   328
          make_block_at(cur_bci + switch_->pair_at(i)->offset(), current);
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diff changeset
   329
        }
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diff changeset
   330
        make_block_at(cur_bci + switch_->default_offset(), current);
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diff changeset
   331
        current = NULL;
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diff changeset
   332
        break;
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diff changeset
   333
      }
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diff changeset
   334
    }
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diff changeset
   335
  }
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diff changeset
   336
}
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   337
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   338
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   339
void BlockListBuilder::mark_loops() {
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   340
  ResourceMark rm;
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diff changeset
   341
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   342
  _active = BitMap(BlockBegin::number_of_blocks());         _active.clear();
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   343
  _visited = BitMap(BlockBegin::number_of_blocks());        _visited.clear();
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   344
  _loop_map = intArray(BlockBegin::number_of_blocks(), 0);
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   345
  _next_loop_index = 0;
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   346
  _next_block_number = _blocks.length();
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   347
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   348
  // recursively iterate the control flow graph
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   349
  mark_loops(_bci2block->at(0), false);
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diff changeset
   350
  assert(_next_block_number >= 0, "invalid block numbers");
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   351
}
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   352
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diff changeset
   353
void BlockListBuilder::make_loop_header(BlockBegin* block) {
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diff changeset
   354
  if (block->is_set(BlockBegin::exception_entry_flag)) {
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diff changeset
   355
    // exception edges may look like loops but don't mark them as such
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diff changeset
   356
    // since it screws up block ordering.
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   357
    return;
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diff changeset
   358
  }
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diff changeset
   359
  if (!block->is_set(BlockBegin::parser_loop_header_flag)) {
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diff changeset
   360
    block->set(BlockBegin::parser_loop_header_flag);
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diff changeset
   361
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   362
    assert(_loop_map.at(block->block_id()) == 0, "must not be set yet");
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   363
    assert(0 <= _next_loop_index && _next_loop_index < BitsPerInt, "_next_loop_index is used as a bit-index in integer");
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   364
    _loop_map.at_put(block->block_id(), 1 << _next_loop_index);
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diff changeset
   365
    if (_next_loop_index < 31) _next_loop_index++;
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diff changeset
   366
  } else {
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diff changeset
   367
    // block already marked as loop header
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diff changeset
   368
    assert(is_power_of_2(_loop_map.at(block->block_id())), "exactly one bit must be set");
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diff changeset
   369
  }
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diff changeset
   370
}
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   371
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   372
int BlockListBuilder::mark_loops(BlockBegin* block, bool in_subroutine) {
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   373
  int block_id = block->block_id();
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   374
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diff changeset
   375
  if (_visited.at(block_id)) {
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diff changeset
   376
    if (_active.at(block_id)) {
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   377
      // reached block via backward branch
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diff changeset
   378
      make_loop_header(block);
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diff changeset
   379
    }
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   380
    // return cached loop information for this block
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   381
    return _loop_map.at(block_id);
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diff changeset
   382
  }
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diff changeset
   383
489c9b5090e2 Initial load
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parents:
diff changeset
   384
  if (block->is_set(BlockBegin::subroutine_entry_flag)) {
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parents:
diff changeset
   385
    in_subroutine = true;
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parents:
diff changeset
   386
  }
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diff changeset
   387
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parents:
diff changeset
   388
  // set active and visited bits before successors are processed
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parents:
diff changeset
   389
  _visited.set_bit(block_id);
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parents:
diff changeset
   390
  _active.set_bit(block_id);
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parents:
diff changeset
   391
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parents:
diff changeset
   392
  intptr_t loop_state = 0;
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parents:
diff changeset
   393
  for (int i = block->number_of_sux() - 1; i >= 0; i--) {
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parents:
diff changeset
   394
    // recursively process all successors
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
    loop_state |= mark_loops(block->sux_at(i), in_subroutine);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
  // clear active-bit after all successors are processed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
  _active.clear_bit(block_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
  // reverse-post-order numbering of all blocks
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
  block->set_depth_first_number(_next_block_number);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  _next_block_number--;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  if (loop_state != 0 || in_subroutine ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
    // block is contained at least in one loop, so phi functions are necessary
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
    // phi functions are also necessary for all locals stored in a subroutine
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
    scope()->requires_phi_function().set_union(block->stores_to_locals());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  if (block->is_set(BlockBegin::parser_loop_header_flag)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
    int header_loop_state = _loop_map.at(block_id);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
    assert(is_power_of_2((unsigned)header_loop_state), "exactly one bit must be set");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
    // If the highest bit is set (i.e. when integer value is negative), the method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
    // has 32 or more loops. This bit is never cleared because it is used for multiple loops
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
    if (header_loop_state >= 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
      clear_bits(loop_state, header_loop_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
  // cache and return loop information for this block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  _loop_map.at_put(block_id, loop_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
  return loop_state;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
int compare_depth_first(BlockBegin** a, BlockBegin** b) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
  return (*a)->depth_first_number() - (*b)->depth_first_number();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
void BlockListBuilder::print() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  tty->print("----- initial block list of BlockListBuilder for method ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  method()->print_short_name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  // better readability if blocks are sorted in processing order
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
  _blocks.sort(compare_depth_first);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  for (int i = 0; i < _blocks.length(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
    BlockBegin* cur = _blocks.at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
    tty->print("%4d: B%-4d bci: %-4d  preds: %-4d ", cur->depth_first_number(), cur->block_id(), cur->bci(), cur->total_preds());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
    tty->print(cur->is_set(BlockBegin::std_entry_flag)               ? " std" : "    ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
    tty->print(cur->is_set(BlockBegin::osr_entry_flag)               ? " osr" : "    ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
    tty->print(cur->is_set(BlockBegin::exception_entry_flag)         ? " ex" : "   ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
    tty->print(cur->is_set(BlockBegin::subroutine_entry_flag)        ? " sr" : "   ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
    tty->print(cur->is_set(BlockBegin::parser_loop_header_flag)      ? " lh" : "   ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
    if (cur->number_of_sux() > 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
      tty->print("    sux: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
      for (int j = 0; j < cur->number_of_sux(); j++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
        BlockBegin* sux = cur->sux_at(j);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
        tty->print("B%d ", sux->block_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
    tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
// A simple growable array of Values indexed by ciFields
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
class FieldBuffer: public CompilationResourceObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
  GrowableArray<Value> _values;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
  FieldBuffer() {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
  void kill() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
    _values.trunc_to(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
  Value at(ciField* field) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
    assert(field->holder()->is_loaded(), "must be a loaded field");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
    int offset = field->offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
    if (offset < _values.length()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
      return _values.at(offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
  void at_put(ciField* field, Value value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
    assert(field->holder()->is_loaded(), "must be a loaded field");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
    int offset = field->offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
    _values.at_put_grow(offset, value, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
// MemoryBuffer is fairly simple model of the current state of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
// It partitions memory into several pieces.  The first piece is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
// generic memory where little is known about the owner of the memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
// This is conceptually represented by the tuple <O, F, V> which says
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
// that the field F of object O has value V.  This is flattened so
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
// that F is represented by the offset of the field and the parallel
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
// arrays _objects and _values are used for O and V.  Loads of O.F can
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
// simply use V.  Newly allocated objects are kept in a separate list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
// along with a parallel array for each object which represents the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
// current value of its fields.  Stores of the default value to fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
// which have never been stored to before are eliminated since they
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
// are redundant.  Once newly allocated objects are stored into
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
// another object or they are passed out of the current compile they
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
// are treated like generic memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
class MemoryBuffer: public CompilationResourceObj {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
  FieldBuffer                 _values;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
  GrowableArray<Value>        _objects;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
  GrowableArray<Value>        _newobjects;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
  GrowableArray<FieldBuffer*> _fields;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
  MemoryBuffer() {}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
  StoreField* store(StoreField* st) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
    if (!EliminateFieldAccess) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
      return st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
    Value object = st->obj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
    Value value = st->value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
    ciField* field = st->field();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
    if (field->holder()->is_loaded()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
      int offset = field->offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
      int index = _newobjects.find(object);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
      if (index != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
        // newly allocated object with no other stores performed on this field
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
        FieldBuffer* buf = _fields.at(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
        if (buf->at(field) == NULL && is_default_value(value)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
          if (PrintIRDuringConstruction && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
            tty->print_cr("Eliminated store for object %d:", index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
            st->print_line();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
          return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
          buf->at_put(field, value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
        _objects.at_put_grow(offset, object, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
        _values.at_put(field, value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
      store_value(value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
      // if we held onto field names we could alias based on names but
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
      // we don't know what's being stored to so kill it all.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
      kill();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
    return st;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  // return true if this value correspond to the default value of a field.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  bool is_default_value(Value value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
    Constant* con = value->as_Constant();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
    if (con) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
      switch (con->type()->tag()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
        case intTag:    return con->type()->as_IntConstant()->value() == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
        case longTag:   return con->type()->as_LongConstant()->value() == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
        case floatTag:  return jint_cast(con->type()->as_FloatConstant()->value()) == 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
        case doubleTag: return jlong_cast(con->type()->as_DoubleConstant()->value()) == jlong_cast(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
        case objectTag: return con->type() == objectNull;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
        default:  ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
    return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  // return either the actual value of a load or the load itself
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  Value load(LoadField* load) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
    if (!EliminateFieldAccess) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
      return load;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
    if (RoundFPResults && UseSSE < 2 && load->type()->is_float_kind()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
      // can't skip load since value might get rounded as a side effect
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
      return load;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
    ciField* field = load->field();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
    Value object   = load->obj();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
    if (field->holder()->is_loaded() && !field->is_volatile()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
      int offset = field->offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
      Value result = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
      int index = _newobjects.find(object);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
      if (index != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
        result = _fields.at(index)->at(field);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
      } else if (_objects.at_grow(offset, NULL) == object) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
        result = _values.at(field);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
      if (result != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
        if (PrintIRDuringConstruction && Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
          tty->print_cr("Eliminated load: ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
          load->print_line();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
        assert(result->type()->tag() == load->type()->tag(), "wrong types");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
        return result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
    return load;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  // Record this newly allocated object
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  void new_instance(NewInstance* object) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
    int index = _newobjects.length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
    _newobjects.append(object);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
    if (_fields.at_grow(index, NULL) == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
      _fields.at_put(index, new FieldBuffer());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
      _fields.at(index)->kill();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  void store_value(Value value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
    int index = _newobjects.find(value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
    if (index != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
      // stored a newly allocated object into another object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
      // Assume we've lost track of it as separate slice of memory.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
      // We could do better by keeping track of whether individual
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
      // fields could alias each other.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
      _newobjects.remove_at(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
      // pull out the field info and store it at the end up the list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
      // of field info list to be reused later.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
      _fields.append(_fields.at(index));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
      _fields.remove_at(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
  void kill() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
    _newobjects.trunc_to(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
    _objects.trunc_to(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
    _values.kill();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
// Implementation of GraphBuilder's ScopeData
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
GraphBuilder::ScopeData::ScopeData(ScopeData* parent)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
  : _parent(parent)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
  , _bci2block(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
  , _scope(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
  , _has_handler(false)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
  , _stream(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
  , _work_list(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
  , _parsing_jsr(false)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
  , _jsr_xhandlers(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
  , _caller_stack_size(-1)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
  , _continuation(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
  , _continuation_state(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
  , _num_returns(0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
  , _cleanup_block(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
  , _cleanup_return_prev(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
  , _cleanup_state(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
  if (parent != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
    _max_inline_size = (intx) ((float) NestedInliningSizeRatio * (float) parent->max_inline_size() / 100.0f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
    _max_inline_size = MaxInlineSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
  if (_max_inline_size < MaxTrivialSize) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
    _max_inline_size = MaxTrivialSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
void GraphBuilder::kill_field(ciField* field) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
  if (UseLocalValueNumbering) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
    vmap()->kill_field(field);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
void GraphBuilder::kill_array(Value value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
  if (UseLocalValueNumbering) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
    vmap()->kill_array(value->type());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
  _memory->store_value(value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
void GraphBuilder::kill_all() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
  if (UseLocalValueNumbering) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
    vmap()->kill_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
  _memory->kill();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
BlockBegin* GraphBuilder::ScopeData::block_at(int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  if (parsing_jsr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
    // It is necessary to clone all blocks associated with a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
    // subroutine, including those for exception handlers in the scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
    // of the method containing the jsr (because those exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
    // handlers may contain ret instructions in some cases).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
    BlockBegin* block = bci2block()->at(bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
    if (block != NULL && block == parent()->bci2block()->at(bci)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
      BlockBegin* new_block = new BlockBegin(block->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
      if (PrintInitialBlockList) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
        tty->print_cr("CFG: cloned block %d (bci %d) as block %d for jsr",
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
                      block->block_id(), block->bci(), new_block->block_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
      // copy data from cloned blocked
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
      new_block->set_depth_first_number(block->depth_first_number());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
      if (block->is_set(BlockBegin::parser_loop_header_flag)) new_block->set(BlockBegin::parser_loop_header_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
      // Preserve certain flags for assertion checking
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
      if (block->is_set(BlockBegin::subroutine_entry_flag)) new_block->set(BlockBegin::subroutine_entry_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
      if (block->is_set(BlockBegin::exception_entry_flag))  new_block->set(BlockBegin::exception_entry_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
      // copy was_visited_flag to allow early detection of bailouts
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
      // if a block that is used in a jsr has already been visited before,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
      // it is shared between the normal control flow and a subroutine
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
      // BlockBegin::try_merge returns false when the flag is set, this leads
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
      // to a compilation bailout
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
      if (block->is_set(BlockBegin::was_visited_flag))  new_block->set(BlockBegin::was_visited_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
      bci2block()->at_put(bci, new_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
      block = new_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
    return block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
    return bci2block()->at(bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
XHandlers* GraphBuilder::ScopeData::xhandlers() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
  if (_jsr_xhandlers == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
    assert(!parsing_jsr(), "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
    return scope()->xhandlers();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
  assert(parsing_jsr(), "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  return _jsr_xhandlers;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
void GraphBuilder::ScopeData::set_scope(IRScope* scope) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
  _scope = scope;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
  bool parent_has_handler = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
  if (parent() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
    parent_has_handler = parent()->has_handler();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
  _has_handler = parent_has_handler || scope->xhandlers()->has_handlers();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
void GraphBuilder::ScopeData::set_inline_cleanup_info(BlockBegin* block,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
                                                      Instruction* return_prev,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
                                                      ValueStack* return_state) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
  _cleanup_block       = block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
  _cleanup_return_prev = return_prev;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
  _cleanup_state       = return_state;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
void GraphBuilder::ScopeData::add_to_work_list(BlockBegin* block) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
  if (_work_list == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
    _work_list = new BlockList();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
  if (!block->is_set(BlockBegin::is_on_work_list_flag)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
    // Do not start parsing the continuation block while in a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
    // sub-scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
    if (parsing_jsr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
      if (block == jsr_continuation()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
      if (block == continuation()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
    block->set(BlockBegin::is_on_work_list_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
    _work_list->push(block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
    sort_top_into_worklist(_work_list, block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
void GraphBuilder::sort_top_into_worklist(BlockList* worklist, BlockBegin* top) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
  assert(worklist->top() == top, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
  // sort block descending into work list
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
  const int dfn = top->depth_first_number();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
  assert(dfn != -1, "unknown depth first number");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
  int i = worklist->length()-2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
  while (i >= 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
    BlockBegin* b = worklist->at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
    if (b->depth_first_number() < dfn) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
      worklist->at_put(i+1, b);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
    i --;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
  if (i >= -1) worklist->at_put(i + 1, top);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
int GraphBuilder::ScopeData::caller_stack_size() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
  ValueStack* state = scope()->caller_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
  if (state == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
    return 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
  return state->stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
BlockBegin* GraphBuilder::ScopeData::remove_from_work_list() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
  if (is_work_list_empty()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
  return _work_list->pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
bool GraphBuilder::ScopeData::is_work_list_empty() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
  return (_work_list == NULL || _work_list->length() == 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
void GraphBuilder::ScopeData::setup_jsr_xhandlers() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
  assert(parsing_jsr(), "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
  // clone all the exception handlers from the scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
  XHandlers* handlers = new XHandlers(scope()->xhandlers());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
  const int n = handlers->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
  for (int i = 0; i < n; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
    // The XHandlers need to be adjusted to dispatch to the cloned
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
    // handler block instead of the default one but the synthetic
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
    // unlocker needs to be handled specially.  The synthetic unlocker
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
    // should be left alone since there can be only one and all code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
    // should dispatch to the same one.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
    XHandler* h = handlers->handler_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
    if (h->handler_bci() != SynchronizationEntryBCI) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
      h->set_entry_block(block_at(h->handler_bci()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
      assert(h->entry_block()->is_set(BlockBegin::default_exception_handler_flag),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
             "should be the synthetic unlock block");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
  _jsr_xhandlers = handlers;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
int GraphBuilder::ScopeData::num_returns() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
  if (parsing_jsr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
    return parent()->num_returns();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
  return _num_returns;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
void GraphBuilder::ScopeData::incr_num_returns() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
  if (parsing_jsr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
    parent()->incr_num_returns();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
    ++_num_returns;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
// Implementation of GraphBuilder
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
#define INLINE_BAILOUT(msg)        { inline_bailout(msg); return false; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
void GraphBuilder::load_constant() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
  ciConstant con = stream()->get_constant();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
  if (con.basic_type() == T_ILLEGAL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
    BAILOUT("could not resolve a constant");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
    ValueType* t = illegalType;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
    ValueStack* patch_state = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
    switch (con.basic_type()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
      case T_BOOLEAN: t = new IntConstant     (con.as_boolean()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
      case T_BYTE   : t = new IntConstant     (con.as_byte   ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
      case T_CHAR   : t = new IntConstant     (con.as_char   ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
      case T_SHORT  : t = new IntConstant     (con.as_short  ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
      case T_INT    : t = new IntConstant     (con.as_int    ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
      case T_LONG   : t = new LongConstant    (con.as_long   ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
      case T_FLOAT  : t = new FloatConstant   (con.as_float  ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
      case T_DOUBLE : t = new DoubleConstant  (con.as_double ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
      case T_ARRAY  : t = new ArrayConstant   (con.as_object ()->as_array   ()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
      case T_OBJECT :
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
       {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
        ciObject* obj = con.as_object();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
        if (obj->is_klass()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
          ciKlass* klass = obj->as_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
          if (!klass->is_loaded() || PatchALot) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
            patch_state = state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
            t = new ObjectConstant(obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
          } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
            t = new InstanceConstant(klass->java_mirror());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
          t = new InstanceConstant(obj->as_instance());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
       }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
      default       : ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
    Value x;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
    if (patch_state != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
      x = new Constant(t, patch_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
      x = new Constant(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
    push(t, append(x));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
void GraphBuilder::load_local(ValueType* type, int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
  Value x = state()->load_local(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
  push(type, x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
void GraphBuilder::store_local(ValueType* type, int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
  Value x = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
  store_local(state(), x, type, index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
void GraphBuilder::store_local(ValueStack* state, Value x, ValueType* type, int index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
  if (parsing_jsr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
    // We need to do additional tracking of the location of the return
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
    // address for jsrs since we don't handle arbitrary jsr/ret
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
    // constructs. Here we are figuring out in which circumstances we
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
    // need to bail out.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
    if (x->type()->is_address()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
      scope_data()->set_jsr_return_address_local(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
      // Also check parent jsrs (if any) at this time to see whether
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
      // they are using this local. We don't handle skipping over a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
      // ret.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
      for (ScopeData* cur_scope_data = scope_data()->parent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
           cur_scope_data != NULL && cur_scope_data->parsing_jsr() && cur_scope_data->scope() == scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
           cur_scope_data = cur_scope_data->parent()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
        if (cur_scope_data->jsr_return_address_local() == index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
          BAILOUT("subroutine overwrites return address from previous subroutine");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
    } else if (index == scope_data()->jsr_return_address_local()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
      scope_data()->set_jsr_return_address_local(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
  state->store_local(index, round_fp(x));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
void GraphBuilder::load_indexed(BasicType type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
  Value index = ipop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
  Value array = apop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
  Value length = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
  if (CSEArrayLength ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
      (array->as_AccessField() && array->as_AccessField()->field()->is_constant()) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
      (array->as_NewArray() && array->as_NewArray()->length() && array->as_NewArray()->length()->type()->is_constant())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
    length = append(new ArrayLength(array, lock_stack()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
  push(as_ValueType(type), append(new LoadIndexed(array, index, length, type, lock_stack())));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
void GraphBuilder::store_indexed(BasicType type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
  Value value = pop(as_ValueType(type));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
  Value index = ipop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
  Value array = apop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
  Value length = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
  if (CSEArrayLength ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
      (array->as_AccessField() && array->as_AccessField()->field()->is_constant()) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
      (array->as_NewArray() && array->as_NewArray()->length() && array->as_NewArray()->length()->type()->is_constant())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
    length = append(new ArrayLength(array, lock_stack()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
  StoreIndexed* result = new StoreIndexed(array, index, length, type, value, lock_stack());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
  kill_array(value); // invalidate all CSEs that are memory accesses of the same type
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
  append(result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
void GraphBuilder::stack_op(Bytecodes::Code code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
  switch (code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
    case Bytecodes::_pop:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
      { state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
    case Bytecodes::_pop2:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
      { state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
        state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
    case Bytecodes::_dup:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
      { Value w = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
        state()->raw_push(w);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
        state()->raw_push(w);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
    case Bytecodes::_dup_x1:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
      { Value w1 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
        Value w2 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
    case Bytecodes::_dup_x2:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
      { Value w1 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
        Value w2 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
        Value w3 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
        state()->raw_push(w3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
    case Bytecodes::_dup2:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
      { Value w1 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
        Value w2 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
    case Bytecodes::_dup2_x1:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
      { Value w1 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
        Value w2 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
        Value w3 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
        state()->raw_push(w3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
    case Bytecodes::_dup2_x2:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
      { Value w1 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
        Value w2 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
        Value w3 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
        Value w4 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
        state()->raw_push(w4);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
        state()->raw_push(w3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
    case Bytecodes::_swap:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
      { Value w1 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
        Value w2 = state()->raw_pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
        state()->raw_push(w1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
        state()->raw_push(w2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
    default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
      ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
void GraphBuilder::arithmetic_op(ValueType* type, Bytecodes::Code code, ValueStack* stack) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
  Value y = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
  Value x = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
  // NOTE: strictfp can be queried from current method since we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
  // inline methods with differing strictfp bits
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
  Value res = new ArithmeticOp(code, x, y, method()->is_strict(), stack);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
  // Note: currently single-precision floating-point rounding on Intel is handled at the LIRGenerator level
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
  res = append(res);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
  if (method()->is_strict()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
    res = round_fp(res);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
  push(type, res);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
void GraphBuilder::negate_op(ValueType* type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
  push(type, append(new NegateOp(pop(type))));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
void GraphBuilder::shift_op(ValueType* type, Bytecodes::Code code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
  Value s = ipop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
  Value x = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
  // try to simplify
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
  // Note: This code should go into the canonicalizer as soon as it can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
  //       can handle canonicalized forms that contain more than one node.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
  if (CanonicalizeNodes && code == Bytecodes::_iushr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
    // pattern: x >>> s
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
    IntConstant* s1 = s->type()->as_IntConstant();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
    if (s1 != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
      // pattern: x >>> s1, with s1 constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
      ShiftOp* l = x->as_ShiftOp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
      if (l != NULL && l->op() == Bytecodes::_ishl) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
        // pattern: (a << b) >>> s1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
        IntConstant* s0 = l->y()->type()->as_IntConstant();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
        if (s0 != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
          // pattern: (a << s0) >>> s1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
          const int s0c = s0->value() & 0x1F; // only the low 5 bits are significant for shifts
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
          const int s1c = s1->value() & 0x1F; // only the low 5 bits are significant for shifts
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
          if (s0c == s1c) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
            if (s0c == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
              // pattern: (a << 0) >>> 0 => simplify to: a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
              ipush(l->x());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
            } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
              // pattern: (a << s0c) >>> s0c => simplify to: a & m, with m constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
              assert(0 < s0c && s0c < BitsPerInt, "adjust code below to handle corner cases");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
              const int m = (1 << (BitsPerInt - s0c)) - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
              Value s = append(new Constant(new IntConstant(m)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
              ipush(append(new LogicOp(Bytecodes::_iand, l->x(), s)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
            return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
  // could not simplify
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
  push(type, append(new ShiftOp(code, x, s)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
void GraphBuilder::logic_op(ValueType* type, Bytecodes::Code code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
  Value y = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
  Value x = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
  push(type, append(new LogicOp(code, x, y)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
void GraphBuilder::compare_op(ValueType* type, Bytecodes::Code code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
  ValueStack* state_before = state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  Value y = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
  Value x = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
  ipush(append(new CompareOp(code, x, y, state_before)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
void GraphBuilder::convert(Bytecodes::Code op, BasicType from, BasicType to) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
  push(as_ValueType(to), append(new Convert(op, pop(as_ValueType(from)), as_ValueType(to))));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
void GraphBuilder::increment() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
  int index = stream()->get_index();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
  int delta = stream()->is_wide() ? (signed short)Bytes::get_Java_u2(stream()->cur_bcp() + 4) : (signed char)(stream()->cur_bcp()[2]);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
  load_local(intType, index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
  ipush(append(new Constant(new IntConstant(delta))));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
  arithmetic_op(intType, Bytecodes::_iadd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
  store_local(intType, index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
void GraphBuilder::_goto(int from_bci, int to_bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
  profile_bci(from_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
  append(new Goto(block_at(to_bci), to_bci <= from_bci));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
void GraphBuilder::if_node(Value x, If::Condition cond, Value y, ValueStack* state_before) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
  BlockBegin* tsux = block_at(stream()->get_dest());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
  BlockBegin* fsux = block_at(stream()->next_bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
  bool is_bb = tsux->bci() < stream()->cur_bci() || fsux->bci() < stream()->cur_bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
  If* if_node = append(new If(x, cond, false, y, tsux, fsux, is_bb ? state_before : NULL, is_bb))->as_If();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
  if (profile_branches() && (if_node != NULL)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
    if_node->set_profiled_method(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
    if_node->set_profiled_bci(bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
    if_node->set_should_profile(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
void GraphBuilder::if_zero(ValueType* type, If::Condition cond) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
  Value y = append(new Constant(intZero));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
  ValueStack* state_before = state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
  Value x = ipop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
  if_node(x, cond, y, state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
void GraphBuilder::if_null(ValueType* type, If::Condition cond) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
  Value y = append(new Constant(objectNull));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
  ValueStack* state_before = state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
  Value x = apop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
  if_node(x, cond, y, state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
void GraphBuilder::if_same(ValueType* type, If::Condition cond) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
  ValueStack* state_before = state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
  Value y = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
  Value x = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
  if_node(x, cond, y, state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
void GraphBuilder::jsr(int dest) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
  // We only handle well-formed jsrs (those which are "block-structured").
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
  // If the bytecodes are strange (jumping out of a jsr block) then we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
  // might end up trying to re-parse a block containing a jsr which
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
  // has already been activated. Watch for this case and bail out.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
  for (ScopeData* cur_scope_data = scope_data();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
       cur_scope_data != NULL && cur_scope_data->parsing_jsr() && cur_scope_data->scope() == scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
       cur_scope_data = cur_scope_data->parent()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
    if (cur_scope_data->jsr_entry_bci() == dest) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
      BAILOUT("too-complicated jsr/ret structure");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
  push(addressType, append(new Constant(new AddressConstant(next_bci()))));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
  if (!try_inline_jsr(dest)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
    return; // bailed out while parsing and inlining subroutine
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
void GraphBuilder::ret(int local_index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
  if (!parsing_jsr()) BAILOUT("ret encountered while not parsing subroutine");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
  if (local_index != scope_data()->jsr_return_address_local()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
    BAILOUT("can not handle complicated jsr/ret constructs");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
  // Rets simply become (NON-SAFEPOINT) gotos to the jsr continuation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
  append(new Goto(scope_data()->jsr_continuation(), false));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
void GraphBuilder::table_switch() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
  Bytecode_tableswitch* switch_ = Bytecode_tableswitch_at(method()->code() + bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
  const int l = switch_->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
  if (CanonicalizeNodes && l == 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
    // total of 2 successors => use If instead of switch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
    // Note: This code should go into the canonicalizer as soon as it can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
    //       can handle canonicalized forms that contain more than one node.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
    Value key = append(new Constant(new IntConstant(switch_->low_key())));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
    BlockBegin* tsux = block_at(bci() + switch_->dest_offset_at(0));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
    BlockBegin* fsux = block_at(bci() + switch_->default_offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
    bool is_bb = tsux->bci() < bci() || fsux->bci() < bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
    ValueStack* state_before = is_bb ? state() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
    append(new If(ipop(), If::eql, true, key, tsux, fsux, state_before, is_bb));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
    // collect successors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
    BlockList* sux = new BlockList(l + 1, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
    int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
    bool has_bb = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
    for (i = 0; i < l; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1262
      sux->at_put(i, block_at(bci() + switch_->dest_offset_at(i)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
      if (switch_->dest_offset_at(i) < 0) has_bb = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1264
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
    // add default successor
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1266
    sux->at_put(i, block_at(bci() + switch_->default_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1267
    ValueStack* state_before = has_bb ? state() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
    append(new TableSwitch(ipop(), sux, switch_->low_key(), state_before, has_bb));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1270
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1271
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1272
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1273
void GraphBuilder::lookup_switch() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1274
  Bytecode_lookupswitch* switch_ = Bytecode_lookupswitch_at(method()->code() + bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1275
  const int l = switch_->number_of_pairs();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1276
  if (CanonicalizeNodes && l == 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1277
    // total of 2 successors => use If instead of switch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1278
    // Note: This code should go into the canonicalizer as soon as it can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
    //       can handle canonicalized forms that contain more than one node.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
    // simplify to If
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1281
    LookupswitchPair* pair = switch_->pair_at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
    Value key = append(new Constant(new IntConstant(pair->match())));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1283
    BlockBegin* tsux = block_at(bci() + pair->offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1284
    BlockBegin* fsux = block_at(bci() + switch_->default_offset());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1285
    bool is_bb = tsux->bci() < bci() || fsux->bci() < bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
    ValueStack* state_before = is_bb ? state() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
    append(new If(ipop(), If::eql, true, key, tsux, fsux, state_before, is_bb));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
    // collect successors & keys
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
    BlockList* sux = new BlockList(l + 1, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
    intArray* keys = new intArray(l, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
    int i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
    bool has_bb = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
    for (i = 0; i < l; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1295
      LookupswitchPair* pair = switch_->pair_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
      if (pair->offset() < 0) has_bb = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
      sux->at_put(i, block_at(bci() + pair->offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
      keys->at_put(i, pair->match());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
    // add default successor
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
    sux->at_put(i, block_at(bci() + switch_->default_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
    ValueStack* state_before = has_bb ? state() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
    append(new LookupSwitch(ipop(), sux, keys, state_before, has_bb));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
void GraphBuilder::call_register_finalizer() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
  // If the receiver requires finalization then emit code to perform
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
  // the registration on return.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
  // Gather some type information about the receiver
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
  Value receiver = state()->load_local(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
  assert(receiver != NULL, "must have a receiver");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
  ciType* declared_type = receiver->declared_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
  ciType* exact_type = receiver->exact_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
  if (exact_type == NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
      receiver->as_Local() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1318
      receiver->as_Local()->java_index() == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1319
    ciInstanceKlass* ik = compilation()->method()->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1320
    if (ik->is_final()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1321
      exact_type = ik;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1322
    } else if (UseCHA && !(ik->has_subklass() || ik->is_interface())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1323
      // test class is leaf class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
      compilation()->dependency_recorder()->assert_leaf_type(ik);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
      exact_type = ik;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
      declared_type = ik;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
  // see if we know statically that registration isn't required
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
  bool needs_check = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
  if (exact_type != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
    needs_check = exact_type->as_instance_klass()->has_finalizer();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
  } else if (declared_type != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
    ciInstanceKlass* ik = declared_type->as_instance_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
    if (!Dependencies::has_finalizable_subclass(ik)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
      compilation()->dependency_recorder()->assert_has_no_finalizable_subclasses(ik);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
      needs_check = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
  if (needs_check) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
    // Perform the registration of finalizable objects.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
    load_local(objectType, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
    append_split(new Intrinsic(voidType, vmIntrinsics::_Object_init,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
                               state()->pop_arguments(1),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
                               true, lock_stack(), true));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
void GraphBuilder::method_return(Value x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
  if (RegisterFinalizersAtInit &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
      method()->intrinsic_id() == vmIntrinsics::_Object_init) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
    call_register_finalizer();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
  // Check to see whether we are inlining. If so, Return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
  // instructions become Gotos to the continuation point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
  if (continuation() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
    assert(!method()->is_synchronized() || InlineSynchronizedMethods, "can not inline synchronized methods yet");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
    // If the inlined method is synchronized, the monitor must be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
    // released before we jump to the continuation block.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
    if (method()->is_synchronized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
      int i = state()->caller_state()->locks_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
      assert(state()->locks_size() == i + 1, "receiver must be locked here");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
      monitorexit(state()->lock_at(i), SynchronizationEntryBCI);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1371
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
    state()->truncate_stack(caller_stack_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
    if (x != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
      state()->push(x->type(), x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1376
    Goto* goto_callee = new Goto(continuation(), false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1377
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
    // See whether this is the first return; if so, store off some
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
    // of the state for later examination
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
    if (num_returns() == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
      set_inline_cleanup_info(_block, _last, state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
    // State at end of inlined method is the state of the caller
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
    // without the method parameters on stack, including the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
    // return value, if any, of the inlined method on operand stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
    set_state(scope_data()->continuation_state()->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
    if (x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
      state()->push(x->type(), x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
    // The current bci() is in the wrong scope, so use the bci() of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
    // the continuation point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
    append_with_bci(goto_callee, scope_data()->continuation()->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
    incr_num_returns();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1397
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1398
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1399
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1400
  state()->truncate_stack(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1401
  if (method()->is_synchronized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
    // perform the unlocking before exiting the method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
    Value receiver;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
    if (!method()->is_static()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
      receiver = _initial_state->local_at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
      receiver = append(new Constant(new ClassConstant(method()->holder())));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
    append_split(new MonitorExit(receiver, state()->unlock()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
  append(new Return(x));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
void GraphBuilder::access_field(Bytecodes::Code code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
  bool will_link;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
  ciField* field = stream()->get_field(will_link);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
  ciInstanceKlass* holder = field->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
  BasicType field_type = field->type()->basic_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
  ValueType* type = as_ValueType(field_type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
  // call will_link again to determine if the field is valid.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
  const bool is_loaded = holder->is_loaded() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
                         field->will_link(method()->holder(), code);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
  const bool is_initialized = is_loaded && holder->is_initialized();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
  ValueStack* state_copy = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
  if (!is_initialized || PatchALot) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
    // save state before instruction for debug info when
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1430
    // deoptimization happens during patching
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
    state_copy = state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
  Value obj = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1435
  if (code == Bytecodes::_getstatic || code == Bytecodes::_putstatic) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1436
    // commoning of class constants should only occur if the class is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1437
    // fully initialized and resolved in this constant pool.  The will_link test
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
    // above essentially checks if this class is resolved in this constant pool
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
    // so, the is_initialized flag should be suffiect.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
    if (state_copy != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
      // build a patching constant
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
      obj = new Constant(new ClassConstant(holder), state_copy);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
      obj = new Constant(new ClassConstant(holder));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
  const int offset = is_loaded ? field->offset() : -1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
  switch (code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
    case Bytecodes::_getstatic: {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
      // check for compile-time constants, i.e., initialized static final fields
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
      Instruction* constant = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
      if (field->is_constant() && !PatchALot) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
        ciConstant field_val = field->constant_value();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
        BasicType field_type = field_val.basic_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
        switch (field_type) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
        case T_ARRAY:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
        case T_OBJECT:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
          if (field_val.as_object()->has_encoding()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
            constant =  new Constant(as_ValueType(field_val));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
          break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
        default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
          constant = new Constant(as_ValueType(field_val));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
      if (constant != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
        push(type, append(constant));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
        state_copy = NULL; // Not a potential deoptimization point (see set_state_before logic below)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
        push(type, append(new LoadField(append(obj), offset, field, true,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
                                        lock_stack(), state_copy, is_loaded, is_initialized)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
    case Bytecodes::_putstatic:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
      { Value val = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1480
        append(new StoreField(append(obj), offset, field, val, true, lock_stack(), state_copy, is_loaded, is_initialized));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
        if (UseLocalValueNumbering) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
          vmap()->kill_field(field);   // invalidate all CSEs that are memory accesses
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
    case Bytecodes::_getfield :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1487
      {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
        LoadField* load = new LoadField(apop(), offset, field, false, lock_stack(), state_copy, is_loaded, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
        Value replacement = is_loaded ? _memory->load(load) : load;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
        if (replacement != load) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
          assert(replacement->bci() != -99 || replacement->as_Phi() || replacement->as_Local(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
                 "should already by linked");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
          push(type, replacement);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1495
          push(type, append(load));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
        break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
    case Bytecodes::_putfield :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
      { Value val = pop(type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
        StoreField* store = new StoreField(apop(), offset, field, val, false, lock_stack(), state_copy, is_loaded, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
        if (is_loaded) store = _memory->store(store);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
        if (store != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
          append(store);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
          kill_field(field);   // invalidate all CSEs that are accesses of this field
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1508
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1509
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1510
    default                   :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1511
      ShouldNotReachHere();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1512
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1513
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
Dependencies* GraphBuilder::dependency_recorder() const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
  assert(DeoptC1, "need debug information");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
  compilation()->set_needs_debug_information(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
  return compilation()->dependency_recorder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1521
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1523
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
void GraphBuilder::invoke(Bytecodes::Code code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
  bool will_link;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1526
  ciMethod* target = stream()->get_method(will_link);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
  // we have to make sure the argument size (incl. the receiver)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1528
  // is correct for compilation (the call would fail later during
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
  // linkage anyway) - was bug (gri 7/28/99)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
  if (target->is_loaded() && target->is_static() != (code == Bytecodes::_invokestatic)) BAILOUT("will cause link error");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
  ciInstanceKlass* klass = target->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
  // check if CHA possible: if so, change the code to invoke_special
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
  ciInstanceKlass* calling_klass = method()->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
  ciKlass* holder = stream()->get_declared_method_holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
  ciInstanceKlass* callee_holder = ciEnv::get_instance_klass_for_declared_method_holder(holder);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
  ciInstanceKlass* actual_recv = callee_holder;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
  // some methods are obviously bindable without any type checks so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
  // convert them directly to an invokespecial.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
  if (target->is_loaded() && !target->is_abstract() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
      target->can_be_statically_bound() && code == Bytecodes::_invokevirtual) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
    code = Bytecodes::_invokespecial;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
  // NEEDS_CLEANUP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
  // I've added the target-is_loaded() test below but I don't really understand
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
  // how klass->is_loaded() can be true and yet target->is_loaded() is false.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
  // this happened while running the JCK invokevirtual tests under doit.  TKR
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
  ciMethod* cha_monomorphic_target = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
  ciMethod* exact_target = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
  if (UseCHA && DeoptC1 && klass->is_loaded() && target->is_loaded()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
    Value receiver = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
    ciInstanceKlass* receiver_klass = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
    bool type_is_exact = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
    // try to find a precise receiver type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
    if (will_link && !target->is_static()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
      int index = state()->stack_size() - (target->arg_size_no_receiver() + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
      receiver = state()->stack_at(index);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1560
      ciType* type = receiver->exact_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
      if (type != NULL && type->is_loaded() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
          type->is_instance_klass() && !type->as_instance_klass()->is_interface()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
        receiver_klass = (ciInstanceKlass*) type;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
        type_is_exact = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
      if (type == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
        type = receiver->declared_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
        if (type != NULL && type->is_loaded() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
            type->is_instance_klass() && !type->as_instance_klass()->is_interface()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
          receiver_klass = (ciInstanceKlass*) type;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
          if (receiver_klass->is_leaf_type() && !receiver_klass->is_final()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
            // Insert a dependency on this type since
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
            // find_monomorphic_target may assume it's already done.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
            dependency_recorder()->assert_leaf_type(receiver_klass);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
            type_is_exact = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
    if (receiver_klass != NULL && type_is_exact &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
        receiver_klass->is_loaded() && code != Bytecodes::_invokespecial) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
      // If we have the exact receiver type we can bind directly to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
      // the method to call.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
      exact_target = target->resolve_invoke(calling_klass, receiver_klass);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
      if (exact_target != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
        target = exact_target;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
        code = Bytecodes::_invokespecial;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
    if (receiver_klass != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
        receiver_klass->is_subtype_of(actual_recv) &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
        actual_recv->is_initialized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
      actual_recv = receiver_klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
    if ((code == Bytecodes::_invokevirtual && callee_holder->is_initialized()) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
        (code == Bytecodes::_invokeinterface && callee_holder->is_initialized() && !actual_recv->is_interface())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
      // Use CHA on the receiver to select a more precise method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
      cha_monomorphic_target = target->find_monomorphic_target(calling_klass, callee_holder, actual_recv);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
    } else if (code == Bytecodes::_invokeinterface && callee_holder->is_loaded() && receiver != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
      // if there is only one implementor of this interface then we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
      // may be able bind this invoke directly to the implementing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
      // klass but we need both a dependence on the single interface
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
      // and on the method we bind to.  Additionally since all we know
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
      // about the receiver type is the it's supposed to implement the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
      // interface we have to insert a check that it's the class we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
      // expect.  Interface types are not checked by the verifier so
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
      // they are roughly equivalent to Object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
      ciInstanceKlass* singleton = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
      if (target->holder()->nof_implementors() == 1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
        singleton = target->holder()->implementor(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
      if (singleton) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
        cha_monomorphic_target = target->find_monomorphic_target(calling_klass, target->holder(), singleton);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
        if (cha_monomorphic_target != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
          // If CHA is able to bind this invoke then update the class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
          // to match that class, otherwise klass will refer to the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
          // interface.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
          klass = cha_monomorphic_target->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1620
          actual_recv = target->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1621
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
          // insert a check it's really the expected class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
          CheckCast* c = new CheckCast(klass, receiver, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
          c->set_incompatible_class_change_check();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
          c->set_direct_compare(klass->is_final());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
          append_split(c);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
  if (cha_monomorphic_target != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
    if (cha_monomorphic_target->is_abstract()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
      // Do not optimize for abstract methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
      cha_monomorphic_target = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
  if (cha_monomorphic_target != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
    if (!(target->is_final_method())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
      // If we inlined because CHA revealed only a single target method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
      // then we are dependent on that target method not getting overridden
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
      // by dynamic class loading.  Be sure to test the "static" receiver
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
      // dest_method here, as opposed to the actual receiver, which may
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
      // falsely lead us to believe that the receiver is final or private.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
      dependency_recorder()->assert_unique_concrete_method(actual_recv, cha_monomorphic_target);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
    code = Bytecodes::_invokespecial;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
  // check if we could do inlining
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1651
  if (!PatchALot && Inline && klass->is_loaded() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
      (klass->is_initialized() || klass->is_interface() && target->holder()->is_initialized())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
      && target->will_link(klass, callee_holder, code)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
    // callee is known => check if we have static binding
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
    assert(target->is_loaded(), "callee must be known");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
    if (code == Bytecodes::_invokestatic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
     || code == Bytecodes::_invokespecial
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
     || code == Bytecodes::_invokevirtual && target->is_final_method()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
    ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
      // static binding => check if callee is ok
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
      ciMethod* inline_target = (cha_monomorphic_target != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
                                  ? cha_monomorphic_target
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
                                  : target;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
      bool res = try_inline(inline_target, (cha_monomorphic_target != NULL) || (exact_target != NULL));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
      CHECK_BAILOUT();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
      // printing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
      if (PrintInlining && !res) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
        // if it was successfully inlined, then it was already printed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
        print_inline_result(inline_target, res);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1672
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1673
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1674
      clear_inline_bailout();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1675
      if (res) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
        // Register dependence if JVMTI has either breakpoint
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
        // setting or hotswapping of methods capabilities since they may
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
        // cause deoptimization.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
        if (JvmtiExport::can_hotswap_or_post_breakpoint()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
          dependency_recorder()->assert_evol_method(inline_target);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
  // If we attempted an inline which did not succeed because of a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
  // bailout during construction of the callee graph, the entire
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
  // compilation has to be aborted. This is fairly rare and currently
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1689
  // seems to only occur for jasm-generated classes which contain
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
  // jsr/ret pairs which are not associated with finally clauses and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
  // do not have exception handlers in the containing method, and are
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
  // therefore not caught early enough to abort the inlining without
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
  // corrupting the graph. (We currently bail out with a non-empty
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
  // stack at a ret in these situations.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
  CHECK_BAILOUT();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
  // inlining not successful => standard invoke
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
  bool is_static = code == Bytecodes::_invokestatic;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
  ValueType* result_type = as_ValueType(target->return_type());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
  Values* args = state()->pop_arguments(target->arg_size_no_receiver());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
  Value recv = is_static ? NULL : apop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
  bool is_loaded = target->is_loaded();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1703
  int vtable_index = methodOopDesc::invalid_vtable_index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1704
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1705
#ifdef SPARC
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1706
  // Currently only supported on Sparc.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1707
  // The UseInlineCaches only controls dispatch to invokevirtuals for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
  // loaded classes which we weren't able to statically bind.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
  if (!UseInlineCaches && is_loaded && code == Bytecodes::_invokevirtual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1710
      && !target->can_be_statically_bound()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
    // Find a vtable index if one is available
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
    vtable_index = target->resolve_vtable_index(calling_klass, callee_holder);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
  if (recv != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
      (code == Bytecodes::_invokespecial ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
       !is_loaded || target->is_final() ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
       profile_calls())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
    // invokespecial always needs a NULL check.  invokevirtual where
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
    // the target is final or where it's not known that whether the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
    // target is final requires a NULL check.  Otherwise normal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
    // invokevirtual will perform the null check during the lookup
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
    // logic or the unverified entry point.  Profiling of calls
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
    // requires that the null check is performed in all cases.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
    null_check(recv);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
  if (profile_calls()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
    assert(cha_monomorphic_target == NULL || exact_target == NULL, "both can not be set");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
    ciKlass* target_klass = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
    if (cha_monomorphic_target != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
      target_klass = cha_monomorphic_target->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
    } else if (exact_target != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
      target_klass = exact_target->holder();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
    profile_call(recv, target_klass);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
  Invoke* result = new Invoke(code, result_type, recv, args, vtable_index, target);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
  // push result
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
  append_split(result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
  if (result_type != voidType) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
    if (method()->is_strict()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
      push(result_type, round_fp(result));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
      push(result_type, result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
void GraphBuilder::new_instance(int klass_index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
  bool will_link;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
  ciKlass* klass = stream()->get_klass(will_link);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
  assert(klass->is_instance_klass(), "must be an instance klass");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
  NewInstance* new_instance = new NewInstance(klass->as_instance_klass());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
  _memory->new_instance(new_instance);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
  apush(append_split(new_instance));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
void GraphBuilder::new_type_array() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
  apush(append_split(new NewTypeArray(ipop(), (BasicType)stream()->get_index())));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
void GraphBuilder::new_object_array() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
  bool will_link;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
  ciKlass* klass = stream()->get_klass(will_link);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
  ValueStack* state_before = !klass->is_loaded() || PatchALot ? state()->copy() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
  NewArray* n = new NewObjectArray(klass, ipop(), state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
  apush(append_split(n));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
bool GraphBuilder::direct_compare(ciKlass* k) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
  if (k->is_loaded() && k->is_instance_klass() && !UseSlowPath) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
    ciInstanceKlass* ik = k->as_instance_klass();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
    if (ik->is_final()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1784
      if (DeoptC1 && UseCHA && !(ik->has_subklass() || ik->is_interface())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1785
        // test class is leaf class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
        dependency_recorder()->assert_leaf_type(ik);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
        return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
  return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1794
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1795
void GraphBuilder::check_cast(int klass_index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
  bool will_link;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
  ciKlass* klass = stream()->get_klass(will_link);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
  ValueStack* state_before = !klass->is_loaded() || PatchALot ? state()->copy() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
  CheckCast* c = new CheckCast(klass, apop(), state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
  apush(append_split(c));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
  c->set_direct_compare(direct_compare(klass));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
  if (profile_checkcasts()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
    c->set_profiled_method(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1804
    c->set_profiled_bci(bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1805
    c->set_should_profile(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
void GraphBuilder::instance_of(int klass_index) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
  bool will_link;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
  ciKlass* klass = stream()->get_klass(will_link);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
  ValueStack* state_before = !klass->is_loaded() || PatchALot ? state()->copy() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
  InstanceOf* i = new InstanceOf(klass, apop(), state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
  ipush(append_split(i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
  i->set_direct_compare(direct_compare(klass));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
void GraphBuilder::monitorenter(Value x, int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
  // save state before locking in case of deoptimization after a NullPointerException
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
  ValueStack* lock_stack_before = lock_stack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
  append_with_bci(new MonitorEnter(x, state()->lock(scope(), x), lock_stack_before), bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
  kill_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
void GraphBuilder::monitorexit(Value x, int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
  // Note: the comment below is only relevant for the case where we do
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
  // not deoptimize due to asynchronous exceptions (!(DeoptC1 &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
  // DeoptOnAsyncException), which is not used anymore)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
  // Note: Potentially, the monitor state in an exception handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
  //       can be wrong due to wrong 'initialization' of the handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
  //       via a wrong asynchronous exception path. This can happen,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
  //       if the exception handler range for asynchronous exceptions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
  //       is too long (see also java bug 4327029, and comment in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
  //       GraphBuilder::handle_exception()). This may cause 'under-
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
  //       flow' of the monitor stack => bailout instead.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
  if (state()->locks_size() < 1) BAILOUT("monitor stack underflow");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
  append_with_bci(new MonitorExit(x, state()->unlock()), bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
  kill_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
void GraphBuilder::new_multi_array(int dimensions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
  bool will_link;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
  ciKlass* klass = stream()->get_klass(will_link);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
  ValueStack* state_before = !klass->is_loaded() || PatchALot ? state()->copy() : NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
  Values* dims = new Values(dimensions, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
  // fill in all dimensions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
  int i = dimensions;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
  while (i-- > 0) dims->at_put(i, ipop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
  // create array
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
  NewArray* n = new NewMultiArray(klass, dims, state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
  apush(append_split(n));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
void GraphBuilder::throw_op(int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
  // We require that the debug info for a Throw be the "state before"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
  // the Throw (i.e., exception oop is still on TOS)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
  ValueStack* state_before = state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
  Throw* t = new Throw(apop(), state_before);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
  append_with_bci(t, bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
Value GraphBuilder::round_fp(Value fp_value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
  // no rounding needed if SSE2 is used
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
  if (RoundFPResults && UseSSE < 2) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
    // Must currently insert rounding node for doubleword values that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
    // are results of expressions (i.e., not loads from memory or
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
    // constants)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
    if (fp_value->type()->tag() == doubleTag &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
        fp_value->as_Constant() == NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
        fp_value->as_Local() == NULL &&       // method parameters need no rounding
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
        fp_value->as_RoundFP() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
      return append(new RoundFP(fp_value));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
  return fp_value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
Instruction* GraphBuilder::append_with_bci(Instruction* instr, int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
  Canonicalizer canon(instr, bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
  Instruction* i1 = canon.canonical();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
  if (i1->bci() != -99) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
    // Canonicalizer returned an instruction which was already
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
    // appended so simply return it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
    return i1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
  } else if (UseLocalValueNumbering) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
    // Lookup the instruction in the ValueMap and add it to the map if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
    // it's not found.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
    Instruction* i2 = vmap()->find_insert(i1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
    if (i2 != i1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
      // found an entry in the value map, so just return it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
      assert(i2->bci() != -1, "should already be linked");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
      return i2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
  if (i1->as_Phi() == NULL && i1->as_Local() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
    // i1 was not eliminated => append it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
    assert(i1->next() == NULL, "shouldn't already be linked");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
    _last = _last->set_next(i1, canon.bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
    if (++_instruction_count >= InstructionCountCutoff
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
        && !bailed_out()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
      // set the bailout state but complete normal processing.  We
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
      // might do a little more work before noticing the bailout so we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
      // want processing to continue normally until it's noticed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
      bailout("Method and/or inlining is too large");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1917
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1918
    if (PrintIRDuringConstruction) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
      InstructionPrinter ip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1920
      ip.print_line(i1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
      if (Verbose) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
        state()->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
    assert(_last == i1, "adjust code below");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
    StateSplit* s = i1->as_StateSplit();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
    if (s != NULL && i1->as_BlockEnd() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
      // Continue CSE across certain intrinsics
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
      Intrinsic* intrinsic = s->as_Intrinsic();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
      if (UseLocalValueNumbering) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
        if (intrinsic == NULL || !intrinsic->preserves_state()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
          vmap()->kill_all();      // for now, hopefully we need this only for calls eventually
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1934
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
      if (EliminateFieldAccess) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
        if (s->as_Invoke() != NULL || (intrinsic && !intrinsic->preserves_state())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
          _memory->kill();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
      s->set_state(state()->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
    // set up exception handlers for this instruction if necessary
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
    if (i1->can_trap()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
      assert(exception_state() != NULL || !has_handler(), "must have setup exception state");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
      i1->set_exception_handlers(handle_exception(bci));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
  return i1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
Instruction* GraphBuilder::append(Instruction* instr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
  assert(instr->as_StateSplit() == NULL || instr->as_BlockEnd() != NULL, "wrong append used");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
  return append_with_bci(instr, bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
Instruction* GraphBuilder::append_split(StateSplit* instr) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
  return append_with_bci(instr, bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
void GraphBuilder::null_check(Value value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
  if (value->as_NewArray() != NULL || value->as_NewInstance() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
    Constant* con = value->as_Constant();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
    if (con) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
      ObjectType* c = con->type()->as_ObjectType();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
      if (c && c->is_loaded()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
        ObjectConstant* oc = c->as_ObjectConstant();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
        if (!oc || !oc->value()->is_null_object()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
          return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1978
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1979
  append(new NullCheck(value, lock_stack()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1980
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1981
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1982
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
XHandlers* GraphBuilder::handle_exception(int cur_bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1985
  // fast path if it is guaranteed that no exception handlers are present
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1986
  if (!has_handler()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1987
    // TODO: check if return NULL is possible (avoids empty lists)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1988
    return new XHandlers();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1989
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1990
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1991
  XHandlers*  exception_handlers = new XHandlers();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1992
  ScopeData*  cur_scope_data = scope_data();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
  ValueStack* s = exception_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1994
  int scope_count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
  assert(s != NULL, "exception state must be set");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
  do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
    assert(cur_scope_data->scope() == s->scope(), "scopes do not match");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
    assert(cur_bci == SynchronizationEntryBCI || cur_bci == cur_scope_data->stream()->cur_bci(), "invalid bci");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
    // join with all potential exception handlers
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
    XHandlers* list = cur_scope_data->xhandlers();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
    const int n = list->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
    for (int i = 0; i < n; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
      XHandler* h = list->handler_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
      if (h->covers(cur_bci)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
        // h is a potential exception handler => join it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
        compilation()->set_has_exception_handlers(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
        BlockBegin* entry = h->entry_block();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
        if (entry == block()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
          // It's acceptable for an exception handler to cover itself
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
          // but we don't handle that in the parser currently.  It's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
          // very rare so we bailout instead of trying to handle it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
          BAILOUT_("exception handler covers itself", exception_handlers);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
        assert(entry->bci() == h->handler_bci(), "must match");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
        assert(entry->bci() == -1 || entry == cur_scope_data->block_at(entry->bci()), "blocks must correspond");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
        // previously this was a BAILOUT, but this is not necessary
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
        // now because asynchronous exceptions are not handled this way.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
        assert(entry->state() == NULL || s->locks_size() == entry->state()->locks_size(), "locks do not match");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
        // xhandler start with an empty expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
        s->truncate_stack(cur_scope_data->caller_stack_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
        // Note: Usually this join must work. However, very
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
        // complicated jsr-ret structures where we don't ret from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
        // the subroutine can cause the objects on the monitor
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
        // stacks to not match because blocks can be parsed twice.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
        // The only test case we've seen so far which exhibits this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
        // problem is caught by the infinite recursion test in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2033
        // GraphBuilder::jsr() if the join doesn't work.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2034
        if (!entry->try_merge(s)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
          BAILOUT_("error while joining with exception handler, prob. due to complicated jsr/rets", exception_handlers);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
        // add current state for correct handling of phi functions at begin of xhandler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
        int phi_operand = entry->add_exception_state(s);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2040
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2041
        // add entry to the list of xhandlers of this block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2042
        _block->add_exception_handler(entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2043
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
        // add back-edge from xhandler entry to this block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
        if (!entry->is_predecessor(_block)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
          entry->add_predecessor(_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
        // clone XHandler because phi_operand and scope_count can not be shared
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
        XHandler* new_xhandler = new XHandler(h);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
        new_xhandler->set_phi_operand(phi_operand);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
        new_xhandler->set_scope_count(scope_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
        exception_handlers->append(new_xhandler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
        // fill in exception handler subgraph lazily
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2056
        assert(!entry->is_set(BlockBegin::was_visited_flag), "entry must not be visited yet");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
        cur_scope_data->add_to_work_list(entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
        // stop when reaching catchall
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
        if (h->catch_type() == 0) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
          return exception_handlers;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2065
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
    // Set up iteration for next time.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
    // If parsing a jsr, do not grab exception handlers from the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
    // parent scopes for this method (already got them, and they
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
    // needed to be cloned)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
    if (cur_scope_data->parsing_jsr()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
      IRScope* tmp_scope = cur_scope_data->scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
      while (cur_scope_data->parent() != NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
             cur_scope_data->parent()->scope() == tmp_scope) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
        cur_scope_data = cur_scope_data->parent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
    if (cur_scope_data != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
      if (cur_scope_data->parent() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
        // must use pop_scope instead of caller_state to preserve all monitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
        s = s->pop_scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
      cur_bci = cur_scope_data->scope()->caller_bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
      cur_scope_data = cur_scope_data->parent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
      scope_count++;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
  } while (cur_scope_data != NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
  return exception_handlers;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
// Helper class for simplifying Phis.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
class PhiSimplifier : public BlockClosure {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
 private:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
  bool _has_substitutions;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
  Value simplify(Value v);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
 public:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
  PhiSimplifier(BlockBegin* start) : _has_substitutions(false) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
    start->iterate_preorder(this);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
    if (_has_substitutions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
      SubstitutionResolver sr(start);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
  void block_do(BlockBegin* b);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
  bool has_substitutions() const { return _has_substitutions; }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
};
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
Value PhiSimplifier::simplify(Value v) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
  Phi* phi = v->as_Phi();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
  if (phi == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
    // no phi function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
    return v;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
  } else if (v->has_subst()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
    // already substituted; subst can be phi itself -> simplify
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
    return simplify(v->subst());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
  } else if (phi->is_set(Phi::cannot_simplify)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
    // already tried to simplify phi before
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
    return phi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
  } else if (phi->is_set(Phi::visited)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
    // break cycles in phi functions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
    return phi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
  } else if (phi->type()->is_illegal()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
    // illegal phi functions are ignored anyway
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
    return phi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
    // mark phi function as processed to break cycles in phi functions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
    phi->set(Phi::visited);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
    // simplify x = [y, x] and x = [y, y] to y
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
    Value subst = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
    int opd_count = phi->operand_count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2136
    for (int i = 0; i < opd_count; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2137
      Value opd = phi->operand_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2138
      assert(opd != NULL, "Operand must exist!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
      if (opd->type()->is_illegal()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
        // if one operand is illegal, the entire phi function is illegal
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
        phi->make_illegal();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
        phi->clear(Phi::visited);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
        return phi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
      Value new_opd = simplify(opd);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
      assert(new_opd != NULL, "Simplified operand must exist!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2150
      if (new_opd != phi && new_opd != subst) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2151
        if (subst == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2152
          subst = new_opd;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2153
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2154
          // no simplification possible
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2155
          phi->set(Phi::cannot_simplify);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2156
          phi->clear(Phi::visited);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
          return phi;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2158
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2159
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2160
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2161
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
    // sucessfully simplified phi function
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2163
    assert(subst != NULL, "illegal phi function");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2164
    _has_substitutions = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2165
    phi->clear(Phi::visited);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
    phi->set_subst(subst);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2167
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2169
    if (PrintPhiFunctions) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2170
      tty->print_cr("simplified phi function %c%d to %c%d (Block B%d)", phi->type()->tchar(), phi->id(), subst->type()->tchar(), subst->id(), phi->block()->block_id());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2171
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2172
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2173
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2174
    return subst;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2175
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
void PhiSimplifier::block_do(BlockBegin* b) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
  for_each_phi_fun(b, phi,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
    simplify(phi);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
  for_each_phi_fun(b, phi,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
                   assert(phi->operand_count() != 1 || phi->subst() != phi, "missed trivial simplification");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
  );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
  ValueStack* state = b->state()->caller_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
  int index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
  Value value;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
  for_each_state(state) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
    for_each_local_value(state, index, value) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
      Phi* phi = value->as_Phi();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
      assert(phi == NULL || phi->block() != b, "must not have phi function to simplify in caller state");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
// This method is called after all blocks are filled with HIR instructions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
// It eliminates all Phi functions of the form x = [y, y] and x = [y, x]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
void GraphBuilder::eliminate_redundant_phis(BlockBegin* start) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
  PhiSimplifier simplifier(start);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
void GraphBuilder::connect_to_end(BlockBegin* beg) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
  // setup iteration
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
  kill_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
  _block = beg;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
  _state = beg->state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
  _last  = beg;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
  iterate_bytecodes_for_block(beg->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
BlockEnd* GraphBuilder::iterate_bytecodes_for_block(int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
  if (PrintIRDuringConstruction) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
    tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
    InstructionPrinter ip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
    ip.print_instr(_block); tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
    ip.print_stack(_block->state()); tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
    ip.print_inline_level(_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2226
    ip.print_head();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
    tty->print_cr("locals size: %d stack size: %d", state()->locals_size(), state()->stack_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
  _skip_block = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
  assert(state() != NULL, "ValueStack missing!");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
  ciBytecodeStream s(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
  s.reset_to_bci(bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
  int prev_bci = bci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
  scope_data()->set_stream(&s);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
  // iterate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2237
  Bytecodes::Code code = Bytecodes::_illegal;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
  bool push_exception = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
  if (block()->is_set(BlockBegin::exception_entry_flag) && block()->next() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
    // first thing in the exception entry block should be the exception object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
    push_exception = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
  while (!bailed_out() && last()->as_BlockEnd() == NULL &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
         (code = stream()->next()) != ciBytecodeStream::EOBC() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
         (block_at(s.cur_bci()) == NULL || block_at(s.cur_bci()) == block())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2249
    if (has_handler() && can_trap(method(), code)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
      // copy the state because it is modified before handle_exception is called
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
      set_exception_state(state()->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2253
      // handle_exception is not called for this bytecode
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2254
      set_exception_state(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2255
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2256
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2257
    // Check for active jsr during OSR compilation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2258
    if (compilation()->is_osr_compile()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2259
        && scope()->is_top_scope()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2260
        && parsing_jsr()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2261
        && s.cur_bci() == compilation()->osr_bci()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2262
      bailout("OSR not supported while a jsr is active");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2263
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2264
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2265
    if (push_exception) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2266
      apush(append(new ExceptionObject()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2267
      push_exception = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2268
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2269
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2270
    // handle bytecode
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2271
    switch (code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2272
      case Bytecodes::_nop            : /* nothing to do */ break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
      case Bytecodes::_aconst_null    : apush(append(new Constant(objectNull            ))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2274
      case Bytecodes::_iconst_m1      : ipush(append(new Constant(new IntConstant   (-1)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2275
      case Bytecodes::_iconst_0       : ipush(append(new Constant(intZero               ))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
      case Bytecodes::_iconst_1       : ipush(append(new Constant(intOne                ))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2277
      case Bytecodes::_iconst_2       : ipush(append(new Constant(new IntConstant   ( 2)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2278
      case Bytecodes::_iconst_3       : ipush(append(new Constant(new IntConstant   ( 3)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
      case Bytecodes::_iconst_4       : ipush(append(new Constant(new IntConstant   ( 4)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2280
      case Bytecodes::_iconst_5       : ipush(append(new Constant(new IntConstant   ( 5)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2281
      case Bytecodes::_lconst_0       : lpush(append(new Constant(new LongConstant  ( 0)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2282
      case Bytecodes::_lconst_1       : lpush(append(new Constant(new LongConstant  ( 1)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2283
      case Bytecodes::_fconst_0       : fpush(append(new Constant(new FloatConstant ( 0)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2284
      case Bytecodes::_fconst_1       : fpush(append(new Constant(new FloatConstant ( 1)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2285
      case Bytecodes::_fconst_2       : fpush(append(new Constant(new FloatConstant ( 2)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
      case Bytecodes::_dconst_0       : dpush(append(new Constant(new DoubleConstant( 0)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
      case Bytecodes::_dconst_1       : dpush(append(new Constant(new DoubleConstant( 1)))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
      case Bytecodes::_bipush         : ipush(append(new Constant(new IntConstant(((signed char*)s.cur_bcp())[1])))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
      case Bytecodes::_sipush         : ipush(append(new Constant(new IntConstant((short)Bytes::get_Java_u2(s.cur_bcp()+1))))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
      case Bytecodes::_ldc            : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2291
      case Bytecodes::_ldc_w          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2292
      case Bytecodes::_ldc2_w         : load_constant(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
      case Bytecodes::_iload          : load_local(intType     , s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
      case Bytecodes::_lload          : load_local(longType    , s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
      case Bytecodes::_fload          : load_local(floatType   , s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
      case Bytecodes::_dload          : load_local(doubleType  , s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2297
      case Bytecodes::_aload          : load_local(instanceType, s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
      case Bytecodes::_iload_0        : load_local(intType   , 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
      case Bytecodes::_iload_1        : load_local(intType   , 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
      case Bytecodes::_iload_2        : load_local(intType   , 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2301
      case Bytecodes::_iload_3        : load_local(intType   , 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2302
      case Bytecodes::_lload_0        : load_local(longType  , 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2303
      case Bytecodes::_lload_1        : load_local(longType  , 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2304
      case Bytecodes::_lload_2        : load_local(longType  , 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2305
      case Bytecodes::_lload_3        : load_local(longType  , 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2306
      case Bytecodes::_fload_0        : load_local(floatType , 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2307
      case Bytecodes::_fload_1        : load_local(floatType , 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2308
      case Bytecodes::_fload_2        : load_local(floatType , 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2309
      case Bytecodes::_fload_3        : load_local(floatType , 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2310
      case Bytecodes::_dload_0        : load_local(doubleType, 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2311
      case Bytecodes::_dload_1        : load_local(doubleType, 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2312
      case Bytecodes::_dload_2        : load_local(doubleType, 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2313
      case Bytecodes::_dload_3        : load_local(doubleType, 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2314
      case Bytecodes::_aload_0        : load_local(objectType, 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2315
      case Bytecodes::_aload_1        : load_local(objectType, 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2316
      case Bytecodes::_aload_2        : load_local(objectType, 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2317
      case Bytecodes::_aload_3        : load_local(objectType, 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2318
      case Bytecodes::_iaload         : load_indexed(T_INT   ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2319
      case Bytecodes::_laload         : load_indexed(T_LONG  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2320
      case Bytecodes::_faload         : load_indexed(T_FLOAT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
      case Bytecodes::_daload         : load_indexed(T_DOUBLE); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2322
      case Bytecodes::_aaload         : load_indexed(T_OBJECT); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
      case Bytecodes::_baload         : load_indexed(T_BYTE  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2324
      case Bytecodes::_caload         : load_indexed(T_CHAR  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2325
      case Bytecodes::_saload         : load_indexed(T_SHORT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2326
      case Bytecodes::_istore         : store_local(intType   , s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2327
      case Bytecodes::_lstore         : store_local(longType  , s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2328
      case Bytecodes::_fstore         : store_local(floatType , s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2329
      case Bytecodes::_dstore         : store_local(doubleType, s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2330
      case Bytecodes::_astore         : store_local(objectType, s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2331
      case Bytecodes::_istore_0       : store_local(intType   , 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2332
      case Bytecodes::_istore_1       : store_local(intType   , 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2333
      case Bytecodes::_istore_2       : store_local(intType   , 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2334
      case Bytecodes::_istore_3       : store_local(intType   , 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2335
      case Bytecodes::_lstore_0       : store_local(longType  , 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2336
      case Bytecodes::_lstore_1       : store_local(longType  , 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2337
      case Bytecodes::_lstore_2       : store_local(longType  , 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2338
      case Bytecodes::_lstore_3       : store_local(longType  , 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2339
      case Bytecodes::_fstore_0       : store_local(floatType , 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2340
      case Bytecodes::_fstore_1       : store_local(floatType , 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2341
      case Bytecodes::_fstore_2       : store_local(floatType , 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2342
      case Bytecodes::_fstore_3       : store_local(floatType , 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2343
      case Bytecodes::_dstore_0       : store_local(doubleType, 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2344
      case Bytecodes::_dstore_1       : store_local(doubleType, 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2345
      case Bytecodes::_dstore_2       : store_local(doubleType, 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2346
      case Bytecodes::_dstore_3       : store_local(doubleType, 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2347
      case Bytecodes::_astore_0       : store_local(objectType, 0); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2348
      case Bytecodes::_astore_1       : store_local(objectType, 1); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2349
      case Bytecodes::_astore_2       : store_local(objectType, 2); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2350
      case Bytecodes::_astore_3       : store_local(objectType, 3); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2351
      case Bytecodes::_iastore        : store_indexed(T_INT   ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2352
      case Bytecodes::_lastore        : store_indexed(T_LONG  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2353
      case Bytecodes::_fastore        : store_indexed(T_FLOAT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2354
      case Bytecodes::_dastore        : store_indexed(T_DOUBLE); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2355
      case Bytecodes::_aastore        : store_indexed(T_OBJECT); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2356
      case Bytecodes::_bastore        : store_indexed(T_BYTE  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2357
      case Bytecodes::_castore        : store_indexed(T_CHAR  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2358
      case Bytecodes::_sastore        : store_indexed(T_SHORT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2359
      case Bytecodes::_pop            : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2360
      case Bytecodes::_pop2           : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2361
      case Bytecodes::_dup            : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2362
      case Bytecodes::_dup_x1         : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2363
      case Bytecodes::_dup_x2         : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2364
      case Bytecodes::_dup2           : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2365
      case Bytecodes::_dup2_x1        : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2366
      case Bytecodes::_dup2_x2        : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2367
      case Bytecodes::_swap           : stack_op(code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2368
      case Bytecodes::_iadd           : arithmetic_op(intType   , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
      case Bytecodes::_ladd           : arithmetic_op(longType  , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
      case Bytecodes::_fadd           : arithmetic_op(floatType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
      case Bytecodes::_dadd           : arithmetic_op(doubleType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2372
      case Bytecodes::_isub           : arithmetic_op(intType   , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2373
      case Bytecodes::_lsub           : arithmetic_op(longType  , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2374
      case Bytecodes::_fsub           : arithmetic_op(floatType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
      case Bytecodes::_dsub           : arithmetic_op(doubleType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2376
      case Bytecodes::_imul           : arithmetic_op(intType   , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2377
      case Bytecodes::_lmul           : arithmetic_op(longType  , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2378
      case Bytecodes::_fmul           : arithmetic_op(floatType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2379
      case Bytecodes::_dmul           : arithmetic_op(doubleType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2380
      case Bytecodes::_idiv           : arithmetic_op(intType   , code, lock_stack()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2381
      case Bytecodes::_ldiv           : arithmetic_op(longType  , code, lock_stack()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2382
      case Bytecodes::_fdiv           : arithmetic_op(floatType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2383
      case Bytecodes::_ddiv           : arithmetic_op(doubleType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
      case Bytecodes::_irem           : arithmetic_op(intType   , code, lock_stack()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2385
      case Bytecodes::_lrem           : arithmetic_op(longType  , code, lock_stack()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2386
      case Bytecodes::_frem           : arithmetic_op(floatType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2387
      case Bytecodes::_drem           : arithmetic_op(doubleType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2388
      case Bytecodes::_ineg           : negate_op(intType   ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2389
      case Bytecodes::_lneg           : negate_op(longType  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2390
      case Bytecodes::_fneg           : negate_op(floatType ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2391
      case Bytecodes::_dneg           : negate_op(doubleType); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
      case Bytecodes::_ishl           : shift_op(intType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2393
      case Bytecodes::_lshl           : shift_op(longType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2394
      case Bytecodes::_ishr           : shift_op(intType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
      case Bytecodes::_lshr           : shift_op(longType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2396
      case Bytecodes::_iushr          : shift_op(intType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2397
      case Bytecodes::_lushr          : shift_op(longType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2398
      case Bytecodes::_iand           : logic_op(intType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2399
      case Bytecodes::_land           : logic_op(longType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2400
      case Bytecodes::_ior            : logic_op(intType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2401
      case Bytecodes::_lor            : logic_op(longType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2402
      case Bytecodes::_ixor           : logic_op(intType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2403
      case Bytecodes::_lxor           : logic_op(longType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2404
      case Bytecodes::_iinc           : increment(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2405
      case Bytecodes::_i2l            : convert(code, T_INT   , T_LONG  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2406
      case Bytecodes::_i2f            : convert(code, T_INT   , T_FLOAT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2407
      case Bytecodes::_i2d            : convert(code, T_INT   , T_DOUBLE); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2408
      case Bytecodes::_l2i            : convert(code, T_LONG  , T_INT   ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2409
      case Bytecodes::_l2f            : convert(code, T_LONG  , T_FLOAT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2410
      case Bytecodes::_l2d            : convert(code, T_LONG  , T_DOUBLE); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2411
      case Bytecodes::_f2i            : convert(code, T_FLOAT , T_INT   ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2412
      case Bytecodes::_f2l            : convert(code, T_FLOAT , T_LONG  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2413
      case Bytecodes::_f2d            : convert(code, T_FLOAT , T_DOUBLE); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2414
      case Bytecodes::_d2i            : convert(code, T_DOUBLE, T_INT   ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2415
      case Bytecodes::_d2l            : convert(code, T_DOUBLE, T_LONG  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2416
      case Bytecodes::_d2f            : convert(code, T_DOUBLE, T_FLOAT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2417
      case Bytecodes::_i2b            : convert(code, T_INT   , T_BYTE  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2418
      case Bytecodes::_i2c            : convert(code, T_INT   , T_CHAR  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2419
      case Bytecodes::_i2s            : convert(code, T_INT   , T_SHORT ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2420
      case Bytecodes::_lcmp           : compare_op(longType  , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2421
      case Bytecodes::_fcmpl          : compare_op(floatType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2422
      case Bytecodes::_fcmpg          : compare_op(floatType , code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2423
      case Bytecodes::_dcmpl          : compare_op(doubleType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2424
      case Bytecodes::_dcmpg          : compare_op(doubleType, code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2425
      case Bytecodes::_ifeq           : if_zero(intType   , If::eql); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2426
      case Bytecodes::_ifne           : if_zero(intType   , If::neq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2427
      case Bytecodes::_iflt           : if_zero(intType   , If::lss); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2428
      case Bytecodes::_ifge           : if_zero(intType   , If::geq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2429
      case Bytecodes::_ifgt           : if_zero(intType   , If::gtr); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2430
      case Bytecodes::_ifle           : if_zero(intType   , If::leq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2431
      case Bytecodes::_if_icmpeq      : if_same(intType   , If::eql); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2432
      case Bytecodes::_if_icmpne      : if_same(intType   , If::neq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2433
      case Bytecodes::_if_icmplt      : if_same(intType   , If::lss); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2434
      case Bytecodes::_if_icmpge      : if_same(intType   , If::geq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2435
      case Bytecodes::_if_icmpgt      : if_same(intType   , If::gtr); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2436
      case Bytecodes::_if_icmple      : if_same(intType   , If::leq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2437
      case Bytecodes::_if_acmpeq      : if_same(objectType, If::eql); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2438
      case Bytecodes::_if_acmpne      : if_same(objectType, If::neq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2439
      case Bytecodes::_goto           : _goto(s.cur_bci(), s.get_dest()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2440
      case Bytecodes::_jsr            : jsr(s.get_dest()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2441
      case Bytecodes::_ret            : ret(s.get_index()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2442
      case Bytecodes::_tableswitch    : table_switch(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2443
      case Bytecodes::_lookupswitch   : lookup_switch(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2444
      case Bytecodes::_ireturn        : method_return(ipop()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2445
      case Bytecodes::_lreturn        : method_return(lpop()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2446
      case Bytecodes::_freturn        : method_return(fpop()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2447
      case Bytecodes::_dreturn        : method_return(dpop()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2448
      case Bytecodes::_areturn        : method_return(apop()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2449
      case Bytecodes::_return         : method_return(NULL  ); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2450
      case Bytecodes::_getstatic      : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2451
      case Bytecodes::_putstatic      : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2452
      case Bytecodes::_getfield       : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2453
      case Bytecodes::_putfield       : access_field(code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2454
      case Bytecodes::_invokevirtual  : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2455
      case Bytecodes::_invokespecial  : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2456
      case Bytecodes::_invokestatic   : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2457
      case Bytecodes::_invokeinterface: invoke(code); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2458
      case Bytecodes::_xxxunusedxxx   : ShouldNotReachHere(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2459
      case Bytecodes::_new            : new_instance(s.get_index_big()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2460
      case Bytecodes::_newarray       : new_type_array(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2461
      case Bytecodes::_anewarray      : new_object_array(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2462
      case Bytecodes::_arraylength    : ipush(append(new ArrayLength(apop(), lock_stack()))); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2463
      case Bytecodes::_athrow         : throw_op(s.cur_bci()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2464
      case Bytecodes::_checkcast      : check_cast(s.get_index_big()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2465
      case Bytecodes::_instanceof     : instance_of(s.get_index_big()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2466
      // Note: we do not have special handling for the monitorenter bytecode if DeoptC1 && DeoptOnAsyncException
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2467
      case Bytecodes::_monitorenter   : monitorenter(apop(), s.cur_bci()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2468
      case Bytecodes::_monitorexit    : monitorexit (apop(), s.cur_bci()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2469
      case Bytecodes::_wide           : ShouldNotReachHere(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2470
      case Bytecodes::_multianewarray : new_multi_array(s.cur_bcp()[3]); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2471
      case Bytecodes::_ifnull         : if_null(objectType, If::eql); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2472
      case Bytecodes::_ifnonnull      : if_null(objectType, If::neq); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2473
      case Bytecodes::_goto_w         : _goto(s.cur_bci(), s.get_far_dest()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2474
      case Bytecodes::_jsr_w          : jsr(s.get_far_dest()); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2475
      case Bytecodes::_breakpoint     : BAILOUT_("concurrent setting of breakpoint", NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2476
      default                         : ShouldNotReachHere(); break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2477
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2478
    // save current bci to setup Goto at the end
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2479
    prev_bci = s.cur_bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2480
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2481
  CHECK_BAILOUT_(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2482
  // stop processing of this block (see try_inline_full)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2483
  if (_skip_block) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2484
    _skip_block = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2485
    assert(_last && _last->as_BlockEnd(), "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2486
    return _last->as_BlockEnd();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2487
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2488
  // if there are any, check if last instruction is a BlockEnd instruction
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2489
  BlockEnd* end = last()->as_BlockEnd();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2490
  if (end == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2491
    // all blocks must end with a BlockEnd instruction => add a Goto
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2492
    end = new Goto(block_at(s.cur_bci()), false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2493
    _last = _last->set_next(end, prev_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2494
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2495
  assert(end == last()->as_BlockEnd(), "inconsistency");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2496
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2497
  // if the method terminates, we don't need the stack anymore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2498
  if (end->as_Return() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2499
    state()->clear_stack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2500
  } else if (end->as_Throw() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2501
    // May have exception handler in caller scopes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2502
    state()->truncate_stack(scope()->lock_stack_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2503
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2504
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2505
  // connect to begin & set state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2506
  // NOTE that inlining may have changed the block we are parsing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2507
  block()->set_end(end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2508
  end->set_state(state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2509
  // propagate state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2510
  for (int i = end->number_of_sux() - 1; i >= 0; i--) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2511
    BlockBegin* sux = end->sux_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2512
    assert(sux->is_predecessor(block()), "predecessor missing");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2513
    // be careful, bailout if bytecodes are strange
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2514
    if (!sux->try_merge(state())) BAILOUT_("block join failed", NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2515
    scope_data()->add_to_work_list(end->sux_at(i));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2516
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2517
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2518
  scope_data()->set_stream(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2519
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2520
  // done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2521
  return end;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2522
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2523
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2524
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2525
void GraphBuilder::iterate_all_blocks(bool start_in_current_block_for_inlining) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2526
  do {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2527
    if (start_in_current_block_for_inlining && !bailed_out()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2528
      iterate_bytecodes_for_block(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2529
      start_in_current_block_for_inlining = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2530
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2531
      BlockBegin* b;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2532
      while ((b = scope_data()->remove_from_work_list()) != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2533
        if (!b->is_set(BlockBegin::was_visited_flag)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2534
          if (b->is_set(BlockBegin::osr_entry_flag)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2535
            // we're about to parse the osr entry block, so make sure
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2536
            // we setup the OSR edge leading into this block so that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2537
            // Phis get setup correctly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2538
            setup_osr_entry_block();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2539
            // this is no longer the osr entry block, so clear it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2540
            b->clear(BlockBegin::osr_entry_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2541
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2542
          b->set(BlockBegin::was_visited_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2543
          connect_to_end(b);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2544
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2545
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2546
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2547
  } while (!bailed_out() && !scope_data()->is_work_list_empty());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2548
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2549
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2550
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2551
bool GraphBuilder::_is_initialized = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2552
bool GraphBuilder::_can_trap      [Bytecodes::number_of_java_codes];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2553
bool GraphBuilder::_is_async[Bytecodes::number_of_java_codes];
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2554
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2555
void GraphBuilder::initialize() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2556
  // make sure initialization happens only once (need a
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2557
  // lock here, if we allow the compiler to be re-entrant)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2558
  if (is_initialized()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2559
  _is_initialized = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2560
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2561
  // the following bytecodes are assumed to potentially
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2562
  // throw exceptions in compiled code - note that e.g.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2563
  // monitorexit & the return bytecodes do not throw
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2564
  // exceptions since monitor pairing proved that they
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2565
  // succeed (if monitor pairing succeeded)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2566
  Bytecodes::Code can_trap_list[] =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2567
    { Bytecodes::_ldc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2568
    , Bytecodes::_ldc_w
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2569
    , Bytecodes::_ldc2_w
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2570
    , Bytecodes::_iaload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2571
    , Bytecodes::_laload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2572
    , Bytecodes::_faload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2573
    , Bytecodes::_daload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2574
    , Bytecodes::_aaload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2575
    , Bytecodes::_baload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2576
    , Bytecodes::_caload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2577
    , Bytecodes::_saload
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2578
    , Bytecodes::_iastore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2579
    , Bytecodes::_lastore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2580
    , Bytecodes::_fastore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2581
    , Bytecodes::_dastore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2582
    , Bytecodes::_aastore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2583
    , Bytecodes::_bastore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2584
    , Bytecodes::_castore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2585
    , Bytecodes::_sastore
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2586
    , Bytecodes::_idiv
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2587
    , Bytecodes::_ldiv
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2588
    , Bytecodes::_irem
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2589
    , Bytecodes::_lrem
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2590
    , Bytecodes::_getstatic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2591
    , Bytecodes::_putstatic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2592
    , Bytecodes::_getfield
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2593
    , Bytecodes::_putfield
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2594
    , Bytecodes::_invokevirtual
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2595
    , Bytecodes::_invokespecial
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2596
    , Bytecodes::_invokestatic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2597
    , Bytecodes::_invokeinterface
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2598
    , Bytecodes::_new
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2599
    , Bytecodes::_newarray
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2600
    , Bytecodes::_anewarray
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2601
    , Bytecodes::_arraylength
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2602
    , Bytecodes::_athrow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2603
    , Bytecodes::_checkcast
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2604
    , Bytecodes::_instanceof
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2605
    , Bytecodes::_monitorenter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2606
    , Bytecodes::_multianewarray
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2607
    };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2608
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2609
  // the following bytecodes are assumed to potentially
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2610
  // throw asynchronous exceptions in compiled code due
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2611
  // to safepoints (note: these entries could be merged
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2612
  // with the can_trap_list - however, we need to know
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2613
  // which ones are asynchronous for now - see also the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2614
  // comment in GraphBuilder::handle_exception)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2615
  Bytecodes::Code is_async_list[] =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2616
    { Bytecodes::_ifeq
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2617
    , Bytecodes::_ifne
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2618
    , Bytecodes::_iflt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2619
    , Bytecodes::_ifge
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2620
    , Bytecodes::_ifgt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2621
    , Bytecodes::_ifle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2622
    , Bytecodes::_if_icmpeq
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2623
    , Bytecodes::_if_icmpne
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2624
    , Bytecodes::_if_icmplt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2625
    , Bytecodes::_if_icmpge
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2626
    , Bytecodes::_if_icmpgt
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2627
    , Bytecodes::_if_icmple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2628
    , Bytecodes::_if_acmpeq
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2629
    , Bytecodes::_if_acmpne
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2630
    , Bytecodes::_goto
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2631
    , Bytecodes::_jsr
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2632
    , Bytecodes::_ret
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2633
    , Bytecodes::_tableswitch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2634
    , Bytecodes::_lookupswitch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2635
    , Bytecodes::_ireturn
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2636
    , Bytecodes::_lreturn
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2637
    , Bytecodes::_freturn
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2638
    , Bytecodes::_dreturn
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2639
    , Bytecodes::_areturn
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2640
    , Bytecodes::_return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2641
    , Bytecodes::_ifnull
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2642
    , Bytecodes::_ifnonnull
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2643
    , Bytecodes::_goto_w
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2644
    , Bytecodes::_jsr_w
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2645
    };
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2646
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2647
  // inititialize trap tables
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2648
  for (int i = 0; i < Bytecodes::number_of_java_codes; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2649
    _can_trap[i] = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2650
    _is_async[i] = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2651
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2652
  // set standard trap info
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2653
  for (uint j = 0; j < ARRAY_SIZE(can_trap_list); j++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2654
    _can_trap[can_trap_list[j]] = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2655
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2656
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2657
  // We now deoptimize if an asynchronous exception is thrown. This
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2658
  // considerably cleans up corner case issues related to javac's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2659
  // incorrect exception handler ranges for async exceptions and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2660
  // allows us to precisely analyze the types of exceptions from
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2661
  // certain bytecodes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2662
  if (!(DeoptC1 && DeoptOnAsyncException)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2663
    // set asynchronous trap info
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2664
    for (uint k = 0; k < ARRAY_SIZE(is_async_list); k++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2665
      assert(!_can_trap[is_async_list[k]], "can_trap_list and is_async_list should be disjoint");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2666
      _can_trap[is_async_list[k]] = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2667
      _is_async[is_async_list[k]] = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2668
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2669
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2670
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2671
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2672
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2673
BlockBegin* GraphBuilder::header_block(BlockBegin* entry, BlockBegin::Flag f, ValueStack* state) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2674
  assert(entry->is_set(f), "entry/flag mismatch");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2675
  // create header block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2676
  BlockBegin* h = new BlockBegin(entry->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2677
  h->set_depth_first_number(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2678
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2679
  Value l = h;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2680
  if (profile_branches()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2681
    // Increment the invocation count on entry to the method.  We
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2682
    // can't use profile_invocation here because append isn't setup to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2683
    // work properly at this point.  The instruction have to be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2684
    // appended to the instruction stream by hand.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2685
    Value m = new Constant(new ObjectConstant(compilation()->method()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2686
    h->set_next(m, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2687
    Value p = new ProfileCounter(m, methodOopDesc::interpreter_invocation_counter_offset_in_bytes(), 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2688
    m->set_next(p, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2689
    l = p;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2690
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2691
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2692
  BlockEnd* g = new Goto(entry, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2693
  l->set_next(g, entry->bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2694
  h->set_end(g);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2695
  h->set(f);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2696
  // setup header block end state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2697
  ValueStack* s = state->copy(); // can use copy since stack is empty (=> no phis)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2698
  assert(s->stack_is_empty(), "must have empty stack at entry point");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2699
  g->set_state(s);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2700
  return h;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2701
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2702
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2703
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2704
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2705
BlockBegin* GraphBuilder::setup_start_block(int osr_bci, BlockBegin* std_entry, BlockBegin* osr_entry, ValueStack* state) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2706
  BlockBegin* start = new BlockBegin(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2707
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2708
  // This code eliminates the empty start block at the beginning of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2709
  // each method.  Previously, each method started with the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2710
  // start-block created below, and this block was followed by the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2711
  // header block that was always empty.  This header block is only
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2712
  // necesary if std_entry is also a backward branch target because
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2713
  // then phi functions may be necessary in the header block.  It's
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2714
  // also necessary when profiling so that there's a single block that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2715
  // can increment the interpreter_invocation_count.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2716
  BlockBegin* new_header_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2717
  if (std_entry->number_of_preds() == 0 && !profile_branches()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2718
    new_header_block = std_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2719
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2720
    new_header_block = header_block(std_entry, BlockBegin::std_entry_flag, state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2721
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2722
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2723
  // setup start block (root for the IR graph)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2724
  Base* base =
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2725
    new Base(
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2726
      new_header_block,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2727
      osr_entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2728
    );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2729
  start->set_next(base, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2730
  start->set_end(base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2731
  // create & setup state for start block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2732
  start->set_state(state->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2733
  base->set_state(state->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2734
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2735
  if (base->std_entry()->state() == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2736
    // setup states for header blocks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2737
    base->std_entry()->merge(state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2738
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2739
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2740
  assert(base->std_entry()->state() != NULL, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2741
  return start;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2742
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2743
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2744
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2745
void GraphBuilder::setup_osr_entry_block() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2746
  assert(compilation()->is_osr_compile(), "only for osrs");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2747
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2748
  int osr_bci = compilation()->osr_bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2749
  ciBytecodeStream s(method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2750
  s.reset_to_bci(osr_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2751
  s.next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2752
  scope_data()->set_stream(&s);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2753
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2754
  // create a new block to be the osr setup code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2755
  _osr_entry = new BlockBegin(osr_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2756
  _osr_entry->set(BlockBegin::osr_entry_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2757
  _osr_entry->set_depth_first_number(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2758
  BlockBegin* target = bci2block()->at(osr_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2759
  assert(target != NULL && target->is_set(BlockBegin::osr_entry_flag), "must be there");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2760
  // the osr entry has no values for locals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2761
  ValueStack* state = target->state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2762
  _osr_entry->set_state(state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2763
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2764
  kill_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2765
  _block = _osr_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2766
  _state = _osr_entry->state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2767
  _last  = _osr_entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2768
  Value e = append(new OsrEntry());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2769
  e->set_needs_null_check(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2770
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2771
  // OSR buffer is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2772
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2773
  // locals[nlocals-1..0]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2774
  // monitors[number_of_locks-1..0]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2775
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2776
  // locals is a direct copy of the interpreter frame so in the osr buffer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2777
  // so first slot in the local array is the last local from the interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2778
  // and last slot is local[0] (receiver) from the interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2779
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2780
  // Similarly with locks. The first lock slot in the osr buffer is the nth lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2781
  // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2782
  // in the interpreter frame (the method lock if a sync method)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2783
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2784
  // Initialize monitors in the compiled activation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2785
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2786
  int index;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2787
  Value local;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2788
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2789
  // find all the locals that the interpreter thinks contain live oops
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2790
  const BitMap live_oops = method()->live_local_oops_at_bci(osr_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2791
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2792
  // compute the offset into the locals so that we can treat the buffer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2793
  // as if the locals were still in the interpreter frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2794
  int locals_offset = BytesPerWord * (method()->max_locals() - 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2795
  for_each_local_value(state, index, local) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2796
    int offset = locals_offset - (index + local->type()->size() - 1) * BytesPerWord;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2797
    Value get;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2798
    if (local->type()->is_object_kind() && !live_oops.at(index)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2799
      // The interpreter thinks this local is dead but the compiler
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2800
      // doesn't so pretend that the interpreter passed in null.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2801
      get = append(new Constant(objectNull));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2802
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2803
      get = append(new UnsafeGetRaw(as_BasicType(local->type()), e,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2804
                                    append(new Constant(new IntConstant(offset))),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2805
                                    0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2806
                                    true));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2807
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2808
    _state->store_local(index, get);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2809
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2810
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2811
  // the storage for the OSR buffer is freed manually in the LIRGenerator.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2812
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2813
  assert(state->caller_state() == NULL, "should be top scope");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2814
  state->clear_locals();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2815
  Goto* g = new Goto(target, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2816
  g->set_state(_state->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2817
  append(g);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2818
  _osr_entry->set_end(g);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2819
  target->merge(_osr_entry->end()->state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2820
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2821
  scope_data()->set_stream(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2822
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2823
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2824
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2825
ValueStack* GraphBuilder::state_at_entry() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2826
  ValueStack* state = new ValueStack(scope(), method()->max_locals(), method()->max_stack());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2827
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2828
  // Set up locals for receiver
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2829
  int idx = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2830
  if (!method()->is_static()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2831
    // we should always see the receiver
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2832
    state->store_local(idx, new Local(objectType, idx));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2833
    idx = 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2834
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2835
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2836
  // Set up locals for incoming arguments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2837
  ciSignature* sig = method()->signature();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2838
  for (int i = 0; i < sig->count(); i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2839
    ciType* type = sig->type_at(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2840
    BasicType basic_type = type->basic_type();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2841
    // don't allow T_ARRAY to propagate into locals types
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2842
    if (basic_type == T_ARRAY) basic_type = T_OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2843
    ValueType* vt = as_ValueType(basic_type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2844
    state->store_local(idx, new Local(vt, idx));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2845
    idx += type->size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2846
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2847
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2848
  // lock synchronized method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2849
  if (method()->is_synchronized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2850
    state->lock(scope(), NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2851
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2852
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2853
  return state;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2854
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2855
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2856
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2857
GraphBuilder::GraphBuilder(Compilation* compilation, IRScope* scope)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2858
  : _scope_data(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2859
  , _exception_state(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2860
  , _instruction_count(0)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2861
  , _osr_entry(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2862
  , _memory(new MemoryBuffer())
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2863
  , _compilation(compilation)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2864
  , _inline_bailout_msg(NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2865
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2866
  int osr_bci = compilation->osr_bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2867
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2868
  // determine entry points and bci2block mapping
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2869
  BlockListBuilder blm(compilation, scope, osr_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2870
  CHECK_BAILOUT();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2871
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2872
  BlockList* bci2block = blm.bci2block();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2873
  BlockBegin* start_block = bci2block->at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2874
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2875
  assert(is_initialized(), "GraphBuilder must have been initialized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2876
  push_root_scope(scope, bci2block, start_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2877
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2878
  // setup state for std entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2879
  _initial_state = state_at_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2880
  start_block->merge(_initial_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2881
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2882
  BlockBegin* sync_handler = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2883
  if (method()->is_synchronized() || DTraceMethodProbes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2884
    // setup an exception handler to do the unlocking and/or notification
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2885
    sync_handler = new BlockBegin(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2886
    sync_handler->set(BlockBegin::exception_entry_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2887
    sync_handler->set(BlockBegin::is_on_work_list_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2888
    sync_handler->set(BlockBegin::default_exception_handler_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2889
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2890
    ciExceptionHandler* desc = new ciExceptionHandler(method()->holder(), 0, method()->code_size(), -1, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2891
    XHandler* h = new XHandler(desc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2892
    h->set_entry_block(sync_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2893
    scope_data()->xhandlers()->append(h);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2894
    scope_data()->set_has_handler();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2895
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2896
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2897
  // complete graph
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2898
  _vmap        = new ValueMap();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2899
  scope->compute_lock_stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2900
  switch (scope->method()->intrinsic_id()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2901
  case vmIntrinsics::_dabs          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2902
  case vmIntrinsics::_dsqrt         : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2903
  case vmIntrinsics::_dsin          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2904
  case vmIntrinsics::_dcos          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2905
  case vmIntrinsics::_dtan          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2906
  case vmIntrinsics::_dlog          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2907
  case vmIntrinsics::_dlog10        : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2908
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2909
      // Compiles where the root method is an intrinsic need a special
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2910
      // compilation environment because the bytecodes for the method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2911
      // shouldn't be parsed during the compilation, only the special
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2912
      // Intrinsic node should be emitted.  If this isn't done the the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2913
      // code for the inlined version will be different than the root
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2914
      // compiled version which could lead to monotonicity problems on
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2915
      // intel.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2916
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2917
      // Set up a stream so that appending instructions works properly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2918
      ciBytecodeStream s(scope->method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2919
      s.reset_to_bci(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2920
      scope_data()->set_stream(&s);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2921
      s.next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2922
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2923
      // setup the initial block state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2924
      _block = start_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2925
      _state = start_block->state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2926
      _last  = start_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2927
      load_local(doubleType, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2928
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2929
      // Emit the intrinsic node.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2930
      bool result = try_inline_intrinsics(scope->method());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2931
      if (!result) BAILOUT("failed to inline intrinsic");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2932
      method_return(dpop());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2933
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2934
      // connect the begin and end blocks and we're all done.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2935
      BlockEnd* end = last()->as_BlockEnd();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2936
      block()->set_end(end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2937
      end->set_state(state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2938
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2939
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2940
  default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2941
    scope_data()->add_to_work_list(start_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2942
    iterate_all_blocks();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2943
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2944
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2945
  CHECK_BAILOUT();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2946
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2947
  if (sync_handler && sync_handler->state() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2948
    Value lock = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2949
    if (method()->is_synchronized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2950
      lock = method()->is_static() ? new Constant(new InstanceConstant(method()->holder()->java_mirror())) :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2951
                                     _initial_state->local_at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2952
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2953
      sync_handler->state()->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2954
      sync_handler->state()->lock(scope, lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2955
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2956
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2957
    fill_sync_handler(lock, sync_handler, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2958
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2959
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2960
  _start = setup_start_block(osr_bci, start_block, _osr_entry, _initial_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2961
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2962
  eliminate_redundant_phis(_start);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2963
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2964
  NOT_PRODUCT(if (PrintValueNumbering && Verbose) print_stats());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2965
  // for osr compile, bailout if some requirements are not fulfilled
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2966
  if (osr_bci != -1) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2967
    BlockBegin* osr_block = blm.bci2block()->at(osr_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2968
    assert(osr_block->is_set(BlockBegin::was_visited_flag),"osr entry must have been visited for osr compile");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2969
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2970
    // check if osr entry point has empty stack - we cannot handle non-empty stacks at osr entry points
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2971
    if (!osr_block->state()->stack_is_empty()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2972
      BAILOUT("stack not empty at OSR entry point");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2973
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2974
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2975
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2976
  if (PrintCompilation && Verbose) tty->print_cr("Created %d Instructions", _instruction_count);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2977
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2978
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2979
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2980
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2981
ValueStack* GraphBuilder::lock_stack() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2982
  // return a new ValueStack representing just the current lock stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2983
  // (for debug info at safepoints in exception throwing or handling)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2984
  ValueStack* new_stack = state()->copy_locks();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2985
  return new_stack;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2986
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2987
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2988
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2989
int GraphBuilder::recursive_inline_level(ciMethod* cur_callee) const {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2990
  int recur_level = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2991
  for (IRScope* s = scope(); s != NULL; s = s->caller()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2992
    if (s->method() == cur_callee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2993
      ++recur_level;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2994
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2995
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2996
  return recur_level;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2997
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2998
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2999
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3000
bool GraphBuilder::try_inline(ciMethod* callee, bool holder_known) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3001
  // Clear out any existing inline bailout condition
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3002
  clear_inline_bailout();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3003
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3004
  if (callee->should_exclude()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3005
    // callee is excluded
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3006
    INLINE_BAILOUT("excluded by CompilerOracle")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3007
  } else if (!callee->can_be_compiled()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3008
    // callee is not compilable (prob. has breakpoints)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3009
    INLINE_BAILOUT("not compilable")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3010
  } else if (callee->intrinsic_id() != vmIntrinsics::_none && try_inline_intrinsics(callee)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3011
    // intrinsics can be native or not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3012
    return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3013
  } else if (callee->is_native()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3014
    // non-intrinsic natives cannot be inlined
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3015
    INLINE_BAILOUT("non-intrinsic native")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3016
  } else if (callee->is_abstract()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3017
    INLINE_BAILOUT("abstract")
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3018
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3019
    return try_inline_full(callee, holder_known);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3020
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3021
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3022
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3023
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3024
bool GraphBuilder::try_inline_intrinsics(ciMethod* callee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3025
  if (!InlineNatives           ) INLINE_BAILOUT("intrinsic method inlining disabled");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3026
  if (callee->is_synchronized()) INLINE_BAILOUT("intrinsic method is synchronized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3027
  // callee seems like a good candidate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3028
  // determine id
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3029
  bool preserves_state = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3030
  bool cantrap = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3031
  vmIntrinsics::ID id = callee->intrinsic_id();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3032
  switch (id) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3033
    case vmIntrinsics::_arraycopy     :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3034
      if (!InlineArrayCopy) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3035
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3036
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3037
    case vmIntrinsics::_currentTimeMillis:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3038
    case vmIntrinsics::_nanoTime:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3039
      preserves_state = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3040
      cantrap = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3041
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3042
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3043
    case vmIntrinsics::_floatToRawIntBits   :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3044
    case vmIntrinsics::_intBitsToFloat      :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3045
    case vmIntrinsics::_doubleToRawLongBits :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3046
    case vmIntrinsics::_longBitsToDouble    :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3047
      if (!InlineMathNatives) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3048
      preserves_state = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3049
      cantrap = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3050
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3051
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3052
    case vmIntrinsics::_getClass      :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3053
      if (!InlineClassNatives) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3054
      preserves_state = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3055
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3056
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3057
    case vmIntrinsics::_currentThread :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3058
      if (!InlineThreadNatives) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3059
      preserves_state = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3060
      cantrap = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3061
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3062
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3063
    case vmIntrinsics::_dabs          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3064
    case vmIntrinsics::_dsqrt         : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3065
    case vmIntrinsics::_dsin          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3066
    case vmIntrinsics::_dcos          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3067
    case vmIntrinsics::_dtan          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3068
    case vmIntrinsics::_dlog          : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3069
    case vmIntrinsics::_dlog10        : // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3070
      if (!InlineMathNatives) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3071
      cantrap = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3072
      preserves_state = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3073
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3074
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3075
    // sun/misc/AtomicLong.attemptUpdate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3076
    case vmIntrinsics::_attemptUpdate :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3077
      if (!VM_Version::supports_cx8()) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3078
      if (!InlineAtomicLong) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3079
      preserves_state = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3080
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3081
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3082
    // Use special nodes for Unsafe instructions so we can more easily
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3083
    // perform an address-mode optimization on the raw variants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3084
    case vmIntrinsics::_getObject : return append_unsafe_get_obj(callee, T_OBJECT,  false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3085
    case vmIntrinsics::_getBoolean: return append_unsafe_get_obj(callee, T_BOOLEAN, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3086
    case vmIntrinsics::_getByte   : return append_unsafe_get_obj(callee, T_BYTE,    false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3087
    case vmIntrinsics::_getShort  : return append_unsafe_get_obj(callee, T_SHORT,   false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3088
    case vmIntrinsics::_getChar   : return append_unsafe_get_obj(callee, T_CHAR,    false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3089
    case vmIntrinsics::_getInt    : return append_unsafe_get_obj(callee, T_INT,     false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3090
    case vmIntrinsics::_getLong   : return append_unsafe_get_obj(callee, T_LONG,    false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3091
    case vmIntrinsics::_getFloat  : return append_unsafe_get_obj(callee, T_FLOAT,   false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3092
    case vmIntrinsics::_getDouble : return append_unsafe_get_obj(callee, T_DOUBLE,  false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3093
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3094
    case vmIntrinsics::_putObject : return append_unsafe_put_obj(callee, T_OBJECT,  false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3095
    case vmIntrinsics::_putBoolean: return append_unsafe_put_obj(callee, T_BOOLEAN, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3096
    case vmIntrinsics::_putByte   : return append_unsafe_put_obj(callee, T_BYTE,    false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3097
    case vmIntrinsics::_putShort  : return append_unsafe_put_obj(callee, T_SHORT,   false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3098
    case vmIntrinsics::_putChar   : return append_unsafe_put_obj(callee, T_CHAR,    false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3099
    case vmIntrinsics::_putInt    : return append_unsafe_put_obj(callee, T_INT,     false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3100
    case vmIntrinsics::_putLong   : return append_unsafe_put_obj(callee, T_LONG,    false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3101
    case vmIntrinsics::_putFloat  : return append_unsafe_put_obj(callee, T_FLOAT,   false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3102
    case vmIntrinsics::_putDouble : return append_unsafe_put_obj(callee, T_DOUBLE,  false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3103
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3104
    case vmIntrinsics::_getObjectVolatile : return append_unsafe_get_obj(callee, T_OBJECT,  true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3105
    case vmIntrinsics::_getBooleanVolatile: return append_unsafe_get_obj(callee, T_BOOLEAN, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3106
    case vmIntrinsics::_getByteVolatile   : return append_unsafe_get_obj(callee, T_BYTE,    true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3107
    case vmIntrinsics::_getShortVolatile  : return append_unsafe_get_obj(callee, T_SHORT,   true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3108
    case vmIntrinsics::_getCharVolatile   : return append_unsafe_get_obj(callee, T_CHAR,    true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3109
    case vmIntrinsics::_getIntVolatile    : return append_unsafe_get_obj(callee, T_INT,     true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3110
    case vmIntrinsics::_getLongVolatile   : return append_unsafe_get_obj(callee, T_LONG,    true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3111
    case vmIntrinsics::_getFloatVolatile  : return append_unsafe_get_obj(callee, T_FLOAT,   true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3112
    case vmIntrinsics::_getDoubleVolatile : return append_unsafe_get_obj(callee, T_DOUBLE,  true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3113
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3114
    case vmIntrinsics::_putObjectVolatile : return append_unsafe_put_obj(callee, T_OBJECT,  true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3115
    case vmIntrinsics::_putBooleanVolatile: return append_unsafe_put_obj(callee, T_BOOLEAN, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3116
    case vmIntrinsics::_putByteVolatile   : return append_unsafe_put_obj(callee, T_BYTE,    true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3117
    case vmIntrinsics::_putShortVolatile  : return append_unsafe_put_obj(callee, T_SHORT,   true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3118
    case vmIntrinsics::_putCharVolatile   : return append_unsafe_put_obj(callee, T_CHAR,    true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3119
    case vmIntrinsics::_putIntVolatile    : return append_unsafe_put_obj(callee, T_INT,     true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3120
    case vmIntrinsics::_putLongVolatile   : return append_unsafe_put_obj(callee, T_LONG,    true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3121
    case vmIntrinsics::_putFloatVolatile  : return append_unsafe_put_obj(callee, T_FLOAT,   true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3122
    case vmIntrinsics::_putDoubleVolatile : return append_unsafe_put_obj(callee, T_DOUBLE,  true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3123
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3124
    case vmIntrinsics::_getByte_raw   : return append_unsafe_get_raw(callee, T_BYTE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3125
    case vmIntrinsics::_getShort_raw  : return append_unsafe_get_raw(callee, T_SHORT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3126
    case vmIntrinsics::_getChar_raw   : return append_unsafe_get_raw(callee, T_CHAR);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3127
    case vmIntrinsics::_getInt_raw    : return append_unsafe_get_raw(callee, T_INT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3128
    case vmIntrinsics::_getLong_raw   : return append_unsafe_get_raw(callee, T_LONG);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3129
    case vmIntrinsics::_getFloat_raw  : return append_unsafe_get_raw(callee, T_FLOAT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3130
    case vmIntrinsics::_getDouble_raw : return append_unsafe_get_raw(callee, T_DOUBLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3131
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3132
    case vmIntrinsics::_putByte_raw   : return append_unsafe_put_raw(callee, T_BYTE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3133
    case vmIntrinsics::_putShort_raw  : return append_unsafe_put_raw(callee, T_SHORT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3134
    case vmIntrinsics::_putChar_raw   : return append_unsafe_put_raw(callee, T_CHAR);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3135
    case vmIntrinsics::_putInt_raw    : return append_unsafe_put_raw(callee, T_INT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3136
    case vmIntrinsics::_putLong_raw   : return append_unsafe_put_raw(callee, T_LONG);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3137
    case vmIntrinsics::_putFloat_raw  : return append_unsafe_put_raw(callee, T_FLOAT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3138
    case vmIntrinsics::_putDouble_raw : return append_unsafe_put_raw(callee, T_DOUBLE);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3139
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3140
    case vmIntrinsics::_prefetchRead        : return append_unsafe_prefetch(callee, false, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3141
    case vmIntrinsics::_prefetchWrite       : return append_unsafe_prefetch(callee, false, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3142
    case vmIntrinsics::_prefetchReadStatic  : return append_unsafe_prefetch(callee, true,  false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3143
    case vmIntrinsics::_prefetchWriteStatic : return append_unsafe_prefetch(callee, true,  true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3144
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3145
    case vmIntrinsics::_checkIndex    :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3146
      if (!InlineNIOCheckIndex) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3147
      preserves_state = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3148
      break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3149
    case vmIntrinsics::_putOrderedObject : return append_unsafe_put_obj(callee, T_OBJECT,  true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3150
    case vmIntrinsics::_putOrderedInt    : return append_unsafe_put_obj(callee, T_INT,     true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3151
    case vmIntrinsics::_putOrderedLong   : return append_unsafe_put_obj(callee, T_LONG,    true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3152
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3153
    case vmIntrinsics::_compareAndSwapLong:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3154
      if (!VM_Version::supports_cx8()) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3155
      // fall through
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3156
    case vmIntrinsics::_compareAndSwapInt:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3157
    case vmIntrinsics::_compareAndSwapObject:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3158
      append_unsafe_CAS(callee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3159
      return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3160
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3161
    default                       : return false; // do not inline
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3162
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3163
  // create intrinsic node
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3164
  const bool has_receiver = !callee->is_static();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3165
  ValueType* result_type = as_ValueType(callee->return_type());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3167
  Values* args = state()->pop_arguments(callee->arg_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3168
  ValueStack* locks = lock_stack();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3169
  if (profile_calls()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3170
    // Don't profile in the special case where the root method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3171
    // is the intrinsic
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3172
    if (callee != method()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3173
      Value recv = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3174
      if (has_receiver) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3175
        recv = args->at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3176
        null_check(recv);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3177
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3178
      profile_call(recv, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3179
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3180
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3181
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3182
  Intrinsic* result = new Intrinsic(result_type, id, args, has_receiver, lock_stack(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3183
                                    preserves_state, cantrap);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3184
  // append instruction & push result
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3185
  Value value = append_split(result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3186
  if (result_type != voidType) push(result_type, value);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3187
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3188
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3189
  // printing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3190
  if (PrintInlining) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3191
    print_inline_result(callee, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3192
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3193
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3194
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3195
  // done
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3196
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3197
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3198
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3199
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3200
bool GraphBuilder::try_inline_jsr(int jsr_dest_bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3201
  // Introduce a new callee continuation point - all Ret instructions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3202
  // will be replaced with Gotos to this point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3203
  BlockBegin* cont = block_at(next_bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3204
  assert(cont != NULL, "continuation must exist (BlockListBuilder starts a new block after a jsr");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3205
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3206
  // Note: can not assign state to continuation yet, as we have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3207
  // pick up the state from the Ret instructions.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3208
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3209
  // Push callee scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3210
  push_scope_for_jsr(cont, jsr_dest_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3211
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3212
  // Temporarily set up bytecode stream so we can append instructions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3213
  // (only using the bci of this stream)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3214
  scope_data()->set_stream(scope_data()->parent()->stream());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3215
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3216
  BlockBegin* jsr_start_block = block_at(jsr_dest_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3217
  assert(jsr_start_block != NULL, "jsr start block must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3218
  assert(!jsr_start_block->is_set(BlockBegin::was_visited_flag), "should not have visited jsr yet");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3219
  Goto* goto_sub = new Goto(jsr_start_block, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3220
  goto_sub->set_state(state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3221
  // Must copy state to avoid wrong sharing when parsing bytecodes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3222
  assert(jsr_start_block->state() == NULL, "should have fresh jsr starting block");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3223
  jsr_start_block->set_state(state()->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3224
  append(goto_sub);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3225
  _block->set_end(goto_sub);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3226
  _last = _block = jsr_start_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3227
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3228
  // Clear out bytecode stream
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3229
  scope_data()->set_stream(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3230
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3231
  scope_data()->add_to_work_list(jsr_start_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3232
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3233
  // Ready to resume parsing in subroutine
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3234
  iterate_all_blocks();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3235
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3236
  // If we bailed out during parsing, return immediately (this is bad news)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3237
  CHECK_BAILOUT_(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3238
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3239
  // Detect whether the continuation can actually be reached. If not,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3240
  // it has not had state set by the join() operations in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3241
  // iterate_bytecodes_for_block()/ret() and we should not touch the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3242
  // iteration state. The calling activation of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3243
  // iterate_bytecodes_for_block will then complete normally.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3244
  if (cont->state() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3245
    if (!cont->is_set(BlockBegin::was_visited_flag)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3246
      // add continuation to work list instead of parsing it immediately
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3247
      scope_data()->parent()->add_to_work_list(cont);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3248
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3249
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3250
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3251
  assert(jsr_continuation() == cont, "continuation must not have changed");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3252
  assert(!jsr_continuation()->is_set(BlockBegin::was_visited_flag) ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3253
         jsr_continuation()->is_set(BlockBegin::parser_loop_header_flag),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3254
         "continuation can only be visited in case of backward branches");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3255
  assert(_last && _last->as_BlockEnd(), "block must have end");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3256
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3257
  // continuation is in work list, so end iteration of current block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3258
  _skip_block = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3259
  pop_scope_for_jsr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3260
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3261
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3262
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3263
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3264
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3265
// Inline the entry of a synchronized method as a monitor enter and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3266
// register the exception handler which releases the monitor if an
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3267
// exception is thrown within the callee. Note that the monitor enter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3268
// cannot throw an exception itself, because the receiver is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3269
// guaranteed to be non-null by the explicit null check at the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3270
// beginning of inlining.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3271
void GraphBuilder::inline_sync_entry(Value lock, BlockBegin* sync_handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3272
  assert(lock != NULL && sync_handler != NULL, "lock or handler missing");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3273
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3274
  set_exception_state(state()->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3275
  monitorenter(lock, SynchronizationEntryBCI);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3276
  assert(_last->as_MonitorEnter() != NULL, "monitor enter expected");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3277
  _last->set_needs_null_check(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3278
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3279
  sync_handler->set(BlockBegin::exception_entry_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3280
  sync_handler->set(BlockBegin::is_on_work_list_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3281
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3282
  ciExceptionHandler* desc = new ciExceptionHandler(method()->holder(), 0, method()->code_size(), -1, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3283
  XHandler* h = new XHandler(desc);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3284
  h->set_entry_block(sync_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3285
  scope_data()->xhandlers()->append(h);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3286
  scope_data()->set_has_handler();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3287
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3288
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3289
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3290
// If an exception is thrown and not handled within an inlined
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3291
// synchronized method, the monitor must be released before the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3292
// exception is rethrown in the outer scope. Generate the appropriate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3293
// instructions here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3294
void GraphBuilder::fill_sync_handler(Value lock, BlockBegin* sync_handler, bool default_handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3295
  BlockBegin* orig_block = _block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3296
  ValueStack* orig_state = _state;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3297
  Instruction* orig_last = _last;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3298
  _last = _block = sync_handler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3299
  _state = sync_handler->state()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3300
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3301
  assert(sync_handler != NULL, "handler missing");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3302
  assert(!sync_handler->is_set(BlockBegin::was_visited_flag), "is visited here");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3303
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3304
  assert(lock != NULL || default_handler, "lock or handler missing");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3305
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3306
  XHandler* h = scope_data()->xhandlers()->remove_last();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3307
  assert(h->entry_block() == sync_handler, "corrupt list of handlers");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3308
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3309
  block()->set(BlockBegin::was_visited_flag);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3310
  Value exception = append_with_bci(new ExceptionObject(), SynchronizationEntryBCI);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3311
  assert(exception->is_pinned(), "must be");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3312
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3313
  int bci = SynchronizationEntryBCI;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3314
  if (lock) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3315
    assert(state()->locks_size() > 0 && state()->lock_at(state()->locks_size() - 1) == lock, "lock is missing");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3316
    if (lock->bci() == -99) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3317
      lock = append_with_bci(lock, -1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3318
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3319
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3320
    // exit the monitor in the context of the synchronized method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3321
    monitorexit(lock, SynchronizationEntryBCI);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3322
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3323
    // exit the context of the synchronized method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3324
    if (!default_handler) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3325
      pop_scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3326
      _state = _state->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3327
      bci = _state->scope()->caller_bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3328
      _state = _state->pop_scope()->copy();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3329
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3330
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3331
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3332
  // perform the throw as if at the the call site
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3333
  apush(exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3334
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3335
  set_exception_state(state()->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3336
  throw_op(bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3337
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3338
  BlockEnd* end = last()->as_BlockEnd();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3339
  block()->set_end(end);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3340
  end->set_state(state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3341
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3342
  _block = orig_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3343
  _state = orig_state;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3344
  _last = orig_last;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3345
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3346
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3347
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3348
bool GraphBuilder::try_inline_full(ciMethod* callee, bool holder_known) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3349
  assert(!callee->is_native(), "callee must not be native");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3350
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3351
  // first perform tests of things it's not possible to inline
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3352
  if (callee->has_exception_handlers() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3353
      !InlineMethodsWithExceptionHandlers) INLINE_BAILOUT("callee has exception handlers");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3354
  if (callee->is_synchronized() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3355
      !InlineSynchronizedMethods         ) INLINE_BAILOUT("callee is synchronized");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3356
  if (!callee->holder()->is_initialized()) INLINE_BAILOUT("callee's klass not initialized yet");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3357
  if (!callee->has_balanced_monitors())    INLINE_BAILOUT("callee's monitors do not match");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3358
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3359
  // Proper inlining of methods with jsrs requires a little more work.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3360
  if (callee->has_jsrs()                 ) INLINE_BAILOUT("jsrs not handled properly by inliner yet");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3361
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3362
  // now perform tests that are based on flag settings
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3363
  if (inline_level() > MaxInlineLevel                         ) INLINE_BAILOUT("too-deep inlining");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3364
  if (recursive_inline_level(callee) > MaxRecursiveInlineLevel) INLINE_BAILOUT("too-deep recursive inlining");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3365
  if (callee->code_size() > max_inline_size()                 ) INLINE_BAILOUT("callee is too large");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3366
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3367
  // don't inline throwable methods unless the inlining tree is rooted in a throwable class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3368
  if (callee->name() == ciSymbol::object_initializer_name() &&
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3369
      callee->holder()->is_subclass_of(ciEnv::current()->Throwable_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3370
    // Throwable constructor call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3371
    IRScope* top = scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3372
    while (top->caller() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3373
      top = top->caller();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3374
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3375
    if (!top->method()->holder()->is_subclass_of(ciEnv::current()->Throwable_klass())) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3376
      INLINE_BAILOUT("don't inline Throwable constructors");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3377
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3378
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3379
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3380
  // When SSE2 is used on intel, then no special handling is needed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3381
  // for strictfp because the enum-constant is fixed at compile time,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3382
  // the check for UseSSE2 is needed here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3383
  if (strict_fp_requires_explicit_rounding && UseSSE < 2 && method()->is_strict() != callee->is_strict()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3384
    INLINE_BAILOUT("caller and callee have different strict fp requirements");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3385
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3386
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3387
  if (compilation()->env()->num_inlined_bytecodes() > DesiredMethodLimit) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3388
    INLINE_BAILOUT("total inlining greater than DesiredMethodLimit");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3389
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3390
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3391
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3392
      // printing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3393
  if (PrintInlining) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3394
    print_inline_result(callee, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3395
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3396
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3397
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3398
  // NOTE: Bailouts from this point on, which occur at the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3399
  // GraphBuilder level, do not cause bailout just of the inlining but
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3400
  // in fact of the entire compilation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3401
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3402
  BlockBegin* orig_block = block();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3403
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3404
  const int args_base = state()->stack_size() - callee->arg_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3405
  assert(args_base >= 0, "stack underflow during inlining");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3406
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3407
  // Insert null check if necessary
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3408
  Value recv = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3409
  if (code() != Bytecodes::_invokestatic) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3410
    // note: null check must happen even if first instruction of callee does
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3411
    //       an implicit null check since the callee is in a different scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3412
    //       and we must make sure exception handling does the right thing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3413
    assert(!callee->is_static(), "callee must not be static");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3414
    assert(callee->arg_size() > 0, "must have at least a receiver");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3415
    recv = state()->stack_at(args_base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3416
    null_check(recv);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3417
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3418
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3419
  if (profile_inlined_calls()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3420
    profile_call(recv, holder_known ? callee->holder() : NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3421
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3422
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3423
  profile_invocation(callee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3424
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3425
  // Introduce a new callee continuation point - if the callee has
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3426
  // more than one return instruction or the return does not allow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3427
  // fall-through of control flow, all return instructions of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3428
  // callee will need to be replaced by Goto's pointing to this
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3429
  // continuation point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3430
  BlockBegin* cont = block_at(next_bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3431
  bool continuation_existed = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3432
  if (cont == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3433
    cont = new BlockBegin(next_bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3434
    // low number so that continuation gets parsed as early as possible
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3435
    cont->set_depth_first_number(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3436
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3437
    if (PrintInitialBlockList) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3438
      tty->print_cr("CFG: created block %d (bci %d) as continuation for inline at bci %d",
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3439
                    cont->block_id(), cont->bci(), bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3440
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3441
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3442
    continuation_existed = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3443
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3444
  // Record number of predecessors of continuation block before
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3445
  // inlining, to detect if inlined method has edges to its
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3446
  // continuation after inlining.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3447
  int continuation_preds = cont->number_of_preds();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3448
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3449
  // Push callee scope
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3450
  push_scope(callee, cont);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3451
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3452
  // the BlockListBuilder for the callee could have bailed out
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3453
  CHECK_BAILOUT_(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3454
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3455
  // Temporarily set up bytecode stream so we can append instructions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3456
  // (only using the bci of this stream)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3457
  scope_data()->set_stream(scope_data()->parent()->stream());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3458
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3459
  // Pass parameters into callee state: add assignments
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3460
  // note: this will also ensure that all arguments are computed before being passed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3461
  ValueStack* callee_state = state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3462
  ValueStack* caller_state = scope()->caller_state();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3463
  { int i = args_base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3464
    while (i < caller_state->stack_size()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3465
      const int par_no = i - args_base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3466
      Value  arg = caller_state->stack_at_inc(i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3467
      // NOTE: take base() of arg->type() to avoid problems storing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3468
      // constants
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3469
      store_local(callee_state, arg, arg->type()->base(), par_no);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3470
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3471
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3472
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3473
  // Remove args from stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3474
  // Note that we preserve locals state in case we can use it later
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3475
  // (see use of pop_scope() below)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3476
  caller_state->truncate_stack(args_base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3477
  callee_state->truncate_stack(args_base);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3478
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3479
  // Setup state that is used at returns form the inlined method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3480
  // This is essentially the state of the continuation block,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3481
  // but without the return value on stack, if any, this will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3482
  // be pushed at the return instruction (see method_return).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3483
  scope_data()->set_continuation_state(caller_state->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3484
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3485
  // Compute lock stack size for callee scope now that args have been passed
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3486
  scope()->compute_lock_stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3487
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3488
  Value lock;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3489
  BlockBegin* sync_handler;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3490
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3491
  // Inline the locking of the receiver if the callee is synchronized
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3492
  if (callee->is_synchronized()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3493
    lock = callee->is_static() ? append(new Constant(new InstanceConstant(callee->holder()->java_mirror())))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3494
                               : state()->local_at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3495
    sync_handler = new BlockBegin(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3496
    inline_sync_entry(lock, sync_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3497
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3498
    // recompute the lock stack size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3499
    scope()->compute_lock_stack_size();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3500
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3501
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3502
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3503
  BlockBegin* callee_start_block = block_at(0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3504
  if (callee_start_block != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3505
    assert(callee_start_block->is_set(BlockBegin::parser_loop_header_flag), "must be loop header");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3506
    Goto* goto_callee = new Goto(callee_start_block, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3507
    goto_callee->set_state(state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3508
    // The state for this goto is in the scope of the callee, so use
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3509
    // the entry bci for the callee instead of the call site bci.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3510
    append_with_bci(goto_callee, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3511
    _block->set_end(goto_callee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3512
    callee_start_block->merge(callee_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3513
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3514
    _last = _block = callee_start_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3515
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3516
    scope_data()->add_to_work_list(callee_start_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3517
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3518
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3519
  // Clear out bytecode stream
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3520
  scope_data()->set_stream(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3521
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3522
  // Ready to resume parsing in callee (either in the same block we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3523
  // were in before or in the callee's start block)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3524
  iterate_all_blocks(callee_start_block == NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3525
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3526
  // If we bailed out during parsing, return immediately (this is bad news)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3527
  if (bailed_out()) return false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3528
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3529
  // iterate_all_blocks theoretically traverses in random order; in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3530
  // practice, we have only traversed the continuation if we are
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3531
  // inlining into a subroutine
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3532
  assert(continuation_existed ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3533
         !continuation()->is_set(BlockBegin::was_visited_flag),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3534
         "continuation should not have been parsed yet if we created it");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3535
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3536
  // If we bailed out during parsing, return immediately (this is bad news)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3537
  CHECK_BAILOUT_(false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3538
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3539
  // At this point we are almost ready to return and resume parsing of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3540
  // the caller back in the GraphBuilder. The only thing we want to do
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3541
  // first is an optimization: during parsing of the callee we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3542
  // generated at least one Goto to the continuation block. If we
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3543
  // generated exactly one, and if the inlined method spanned exactly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3544
  // one block (and we didn't have to Goto its entry), then we snip
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3545
  // off the Goto to the continuation, allowing control to fall
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3546
  // through back into the caller block and effectively performing
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3547
  // block merging. This allows load elimination and CSE to take place
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3548
  // across multiple callee scopes if they are relatively simple, and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3549
  // is currently essential to making inlining profitable.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3550
  if (   num_returns() == 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3551
      && block() == orig_block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3552
      && block() == inline_cleanup_block()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3553
    _last = inline_cleanup_return_prev();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3554
    _state = inline_cleanup_state()->pop_scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3555
  } else if (continuation_preds == cont->number_of_preds()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3556
    // Inlining caused that the instructions after the invoke in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3557
    // caller are not reachable any more. So skip filling this block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3558
    // with instructions!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3559
    assert (cont == continuation(), "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3560
    assert(_last && _last->as_BlockEnd(), "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3561
    _skip_block = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3562
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3563
    // Resume parsing in continuation block unless it was already parsed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3564
    // Note that if we don't change _last here, iteration in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3565
    // iterate_bytecodes_for_block will stop when we return.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3566
    if (!continuation()->is_set(BlockBegin::was_visited_flag)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3567
      // add continuation to work list instead of parsing it immediately
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3568
      assert(_last && _last->as_BlockEnd(), "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3569
      scope_data()->parent()->add_to_work_list(continuation());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3570
      _skip_block = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3571
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3572
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3573
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3574
  // Fill the exception handler for synchronized methods with instructions
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3575
  if (callee->is_synchronized() && sync_handler->state() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3576
    fill_sync_handler(lock, sync_handler);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3577
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3578
    pop_scope();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3579
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3580
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3581
  compilation()->notice_inlined_method(callee);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3582
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3583
  return true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3584
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3585
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3586
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3587
void GraphBuilder::inline_bailout(const char* msg) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3588
  assert(msg != NULL, "inline bailout msg must exist");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3589
  _inline_bailout_msg = msg;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3590
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3591
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3592
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3593
void GraphBuilder::clear_inline_bailout() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3594
  _inline_bailout_msg = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3595
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3596
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3597
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3598
void GraphBuilder::push_root_scope(IRScope* scope, BlockList* bci2block, BlockBegin* start) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3599
  ScopeData* data = new ScopeData(NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3600
  data->set_scope(scope);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3601
  data->set_bci2block(bci2block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3602
  _scope_data = data;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3603
  _block = start;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3604
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3605
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3606
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3607
void GraphBuilder::push_scope(ciMethod* callee, BlockBegin* continuation) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3608
  IRScope* callee_scope = new IRScope(compilation(), scope(), bci(), callee, -1, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3609
  scope()->add_callee(callee_scope);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3610
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3611
  BlockListBuilder blb(compilation(), callee_scope, -1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3612
  CHECK_BAILOUT();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3613
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3614
  if (!blb.bci2block()->at(0)->is_set(BlockBegin::parser_loop_header_flag)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3615
    // this scope can be inlined directly into the caller so remove
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3616
    // the block at bci 0.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3617
    blb.bci2block()->at_put(0, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3618
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3619
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3620
  callee_scope->set_caller_state(state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3621
  set_state(state()->push_scope(callee_scope));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3622
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3623
  ScopeData* data = new ScopeData(scope_data());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3624
  data->set_scope(callee_scope);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3625
  data->set_bci2block(blb.bci2block());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3626
  data->set_continuation(continuation);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3627
  _scope_data = data;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3628
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3629
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3630
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3631
void GraphBuilder::push_scope_for_jsr(BlockBegin* jsr_continuation, int jsr_dest_bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3632
  ScopeData* data = new ScopeData(scope_data());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3633
  data->set_parsing_jsr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3634
  data->set_jsr_entry_bci(jsr_dest_bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3635
  data->set_jsr_return_address_local(-1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3636
  // Must clone bci2block list as we will be mutating it in order to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3637
  // properly clone all blocks in jsr region as well as exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3638
  // handlers containing rets
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3639
  BlockList* new_bci2block = new BlockList(bci2block()->length());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3640
  new_bci2block->push_all(bci2block());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3641
  data->set_bci2block(new_bci2block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3642
  data->set_scope(scope());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3643
  data->setup_jsr_xhandlers();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3644
  data->set_continuation(continuation());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3645
  if (continuation() != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3646
    assert(continuation_state() != NULL, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3647
    data->set_continuation_state(continuation_state()->copy());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3648
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3649
  data->set_jsr_continuation(jsr_continuation);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3650
  _scope_data = data;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3651
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3652
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3653
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3654
void GraphBuilder::pop_scope() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3655
  int number_of_locks = scope()->number_of_locks();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3656
  _scope_data = scope_data()->parent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3657
  // accumulate minimum number of monitor slots to be reserved
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3658
  scope()->set_min_number_of_locks(number_of_locks);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3659
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3660
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3661
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3662
void GraphBuilder::pop_scope_for_jsr() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3663
  _scope_data = scope_data()->parent();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3664
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3665
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3666
bool GraphBuilder::append_unsafe_get_obj(ciMethod* callee, BasicType t, bool is_volatile) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3667
  if (InlineUnsafeOps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3668
    Values* args = state()->pop_arguments(callee->arg_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3669
    null_check(args->at(0));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3670
    Instruction* offset = args->at(2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3671
#ifndef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3672
    offset = append(new Convert(Bytecodes::_l2i, offset, as_ValueType(T_INT)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3673
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3674
    Instruction* op = append(new UnsafeGetObject(t, args->at(1), offset, is_volatile));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3675
    push(op->type(), op);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3676
    compilation()->set_has_unsafe_access(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3677
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3678
  return InlineUnsafeOps;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3679
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3680
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3681
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3682
bool GraphBuilder::append_unsafe_put_obj(ciMethod* callee, BasicType t, bool is_volatile) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3683
  if (InlineUnsafeOps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3684
    Values* args = state()->pop_arguments(callee->arg_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3685
    null_check(args->at(0));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3686
    Instruction* offset = args->at(2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3687
#ifndef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3688
    offset = append(new Convert(Bytecodes::_l2i, offset, as_ValueType(T_INT)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3689
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3690
    Instruction* op = append(new UnsafePutObject(t, args->at(1), offset, args->at(3), is_volatile));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3691
    compilation()->set_has_unsafe_access(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3692
    kill_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3693
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3694
  return InlineUnsafeOps;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3695
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3696
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3697
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3698
bool GraphBuilder::append_unsafe_get_raw(ciMethod* callee, BasicType t) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3699
  if (InlineUnsafeOps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3700
    Values* args = state()->pop_arguments(callee->arg_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3701
    null_check(args->at(0));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3702
    Instruction* op = append(new UnsafeGetRaw(t, args->at(1), false));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3703
    push(op->type(), op);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3704
    compilation()->set_has_unsafe_access(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3705
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3706
  return InlineUnsafeOps;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3707
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3708
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3709
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3710
bool GraphBuilder::append_unsafe_put_raw(ciMethod* callee, BasicType t) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3711
  if (InlineUnsafeOps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3712
    Values* args = state()->pop_arguments(callee->arg_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3713
    null_check(args->at(0));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3714
    Instruction* op = append(new UnsafePutRaw(t, args->at(1), args->at(2)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3715
    compilation()->set_has_unsafe_access(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3716
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3717
  return InlineUnsafeOps;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3718
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3719
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3720
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3721
bool GraphBuilder::append_unsafe_prefetch(ciMethod* callee, bool is_static, bool is_store) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3722
  if (InlineUnsafeOps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3723
    Values* args = state()->pop_arguments(callee->arg_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3724
    int obj_arg_index = 1; // Assume non-static case
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3725
    if (is_static) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3726
      obj_arg_index = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3727
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3728
      null_check(args->at(0));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3729
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3730
    Instruction* offset = args->at(obj_arg_index + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3731
#ifndef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3732
    offset = append(new Convert(Bytecodes::_l2i, offset, as_ValueType(T_INT)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3733
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3734
    Instruction* op = is_store ? append(new UnsafePrefetchWrite(args->at(obj_arg_index), offset))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3735
                               : append(new UnsafePrefetchRead (args->at(obj_arg_index), offset));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3736
    compilation()->set_has_unsafe_access(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3737
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3738
  return InlineUnsafeOps;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3739
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3741
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3742
void GraphBuilder::append_unsafe_CAS(ciMethod* callee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3743
  ValueType* result_type = as_ValueType(callee->return_type());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3744
  assert(result_type->is_int(), "int result");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3745
  Values* args = state()->pop_arguments(callee->arg_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3746
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3747
  // Pop off some args to speically handle, then push back
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3748
  Value newval = args->pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3749
  Value cmpval = args->pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3750
  Value offset = args->pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3751
  Value src = args->pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3752
  Value unsafe_obj = args->pop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3753
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3754
  // Separately handle the unsafe arg. It is not needed for code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3755
  // generation, but must be null checked
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3756
  null_check(unsafe_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3757
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3758
#ifndef _LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3759
  offset = append(new Convert(Bytecodes::_l2i, offset, as_ValueType(T_INT)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3760
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3761
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3762
  args->push(src);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3763
  args->push(offset);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3764
  args->push(cmpval);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3765
  args->push(newval);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3766
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3767
  // An unsafe CAS can alias with other field accesses, but we don't
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3768
  // know which ones so mark the state as no preserved.  This will
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3769
  // cause CSE to invalidate memory across it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3770
  bool preserves_state = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3771
  Intrinsic* result = new Intrinsic(result_type, callee->intrinsic_id(), args, false, lock_stack(), preserves_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3772
  append_split(result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3773
  push(result_type, result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3774
  compilation()->set_has_unsafe_access(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3775
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3776
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3777
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3778
#ifndef PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3779
void GraphBuilder::print_inline_result(ciMethod* callee, bool res) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3780
  const char sync_char      = callee->is_synchronized()        ? 's' : ' ';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3781
  const char exception_char = callee->has_exception_handlers() ? '!' : ' ';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3782
  const char monitors_char  = callee->has_monitor_bytecodes()  ? 'm' : ' ';
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3783
  tty->print("     %c%c%c ", sync_char, exception_char, monitors_char);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3784
  for (int i = 0; i < scope()->level(); i++) tty->print("  ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3785
  if (res) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3786
    tty->print("  ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3787
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3788
    tty->print("- ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3789
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3790
  tty->print("@ %d  ", bci());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3791
  callee->print_short_name();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3792
  tty->print(" (%d bytes)", callee->code_size());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3793
  if (_inline_bailout_msg) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3794
    tty->print("  %s", _inline_bailout_msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3795
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3796
  tty->cr();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3797
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3798
  if (res && CIPrintMethodCodes) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3799
    callee->print_codes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3800
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3801
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3802
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3803
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3804
void GraphBuilder::print_stats() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3805
  vmap()->print();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3806
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3807
#endif // PRODUCT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3808
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3809
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3810
void GraphBuilder::profile_call(Value recv, ciKlass* known_holder) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3811
  append(new ProfileCall(method(), bci(), recv, known_holder));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3812
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3813
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3814
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3815
void GraphBuilder::profile_invocation(ciMethod* callee) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3816
  if (profile_calls()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3817
    // increment the interpreter_invocation_count for the inlinee
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3818
    Value m = append(new Constant(new ObjectConstant(callee)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3819
    append(new ProfileCounter(m, methodOopDesc::interpreter_invocation_counter_offset_in_bytes(), 1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3820
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3821
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3822
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3823
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3824
void GraphBuilder::profile_bci(int bci) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3825
  if (profile_branches()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3826
    ciMethodData* md = method()->method_data();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3827
    if (md == NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3828
      BAILOUT("out of memory building methodDataOop");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3829
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3830
    ciProfileData* data = md->bci_to_data(bci);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3831
    assert(data != NULL && data->is_JumpData(), "need JumpData for goto");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3832
    Value mdo = append(new Constant(new ObjectConstant(md)));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3833
    append(new ProfileCounter(mdo, md->byte_offset_of_slot(data, JumpData::taken_offset()), 1));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3834
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  3835
}